8 minute read · Original practice exercise included

Before you start: Understand scope, schedule and the difference between effort and duration.

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Next: Procurement and contracts

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Project Management Exam Prep / E13

Resources

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Tools and references for this lesson

Use these resources to practise and extend the topic. Further applications may go beyond the lesson transcript; source pointers lead to the original author or publisher.

Calculators (5)
Conceptual models (1)
  • Resource plan

    A resource plan connects the work to the skills, capacity and availability required to perform it. · Guide

Formulas (1)
  • Three-point estimation

    Use optimistic, most likely and pessimistic estimates to make uncertainty explicit. · Guide

Step-by-step methods (2)
  • Turn availability into a capacity plan

    Work from usable time and the skills required. Separate effort from elapsed duration and allow for real operational commitments. · Guide

  • Estimate with a range

    Discuss distinct scenarios before calculating a weighted average. The explanation for the range is often more useful than the middle number. · Calculator + guide

Further applications (10)
Original framework and research sources (1)
  • Reference class forecasting

    Challenge an estimate using outcomes from a defensibly comparable class of completed projects. · Source pointer

Check your understanding

Four people each offer five days at six usable hours per day. How much effort is available, and what might still constrain delivery?

Show answer and reasoning

4 × 5 × 6 = 120 person-hours. Skills, sequencing, shared resources and coordination may still constrain elapsed time. Total effort cannot substitute for a missing specialist.

Apply the same reasoning to your own example. State one assumption you would need to check.

Chapters

Jump to the corresponding passage in the transcript.

  1. OpeningWatch on YouTube
  2. One topic, three lensesWatch on YouTube
  3. The core in plain wordsWatch on YouTube
  4. Models and methods: the resource planWatch on YouTube
  5. Models and methods: effort, duration and capacityWatch on YouTube
  6. Mid-level and SeniorWatch on YouTube
  7. Exam drillWatch on YouTube
  8. RecapWatch on YouTube

Study materials

Open the original practice sheet · print or save as PDF

Key terms

The series’ own explanations. Official sources and edition pointers are below.

Resource
Anything the work needs that someone must provide: people and their skills, equipment, facilities, materials and tools. Money is one too, but budgets are managed as finance.
Strategic resource plan
The ICB4's top layer of the resource plan: who is responsible for each part of resourcing, such as who asks for people, who lends them and who settles a clash.
Resource manager or line manager
The person with authority over staff lent to a project. PMI® and APM say resource manager; the ICB4 speaks of line management in the permanent organisation.
Effort and duration
Effort is the amount of work, in person-days. Duration is the time from start to finish. Duration = effort ÷ the people, each counted by their share of time.
Capacity
The work a person or team can take on in a period, after meetings, leave and other duties. In iterative work, a stable team's capacity is fixed and the work is fitted to it.
Resource calendar
PMI®'s term for when each person or item is available to the project, including leave, part-time work and other commitments.

About the lesson’s level labels

Levels (this series' labels): Mid-level = moderately complex projects (IPMA Level C, PMI's PMP®); Senior = complex projects and people (IPMA Level B, APM's Chartered Project Professional).

These are the series’ teaching labels, not a declaration that the certifications are equivalent.

Read the transcript

Timed from the episode captions.

Open episode transcript

Sara: Welcome to Project Management Exam Prep.

This episode is about resources: the people, skills and things a project needs.

Every project management exam tests it, because a plan is only real if someone can

do the work.

Leo: You will learn how the three bodies frame it, how to plan resources and secure people,

and why effort is not duration. We finish with a drill, so keep a pen ready.

Sara: Let us start with the three lenses. What does IPMA® say?

Leo: IPMA®, the International Project Management Association, sets out its standard in

the Individual Competence Baseline, the ICB4.

Its element on resources asks you, in our words, to plan what the project needs

and who is responsible for it, to negotiate for people, and to settle conflicts.

Sara: And PMI®?

Leo: PMI®, the Project Management Institute, publishes the PMBOK® Guide,

its guide to the project management body of knowledge.

The eighth edition has a resources performance domain, from planning resources to

leading the team. The outline of PMI®'s Project Management Professional exam,

the PMP®, has a task to plan and manage resources, balancing needs against availability.

Sara: And APM?

Leo: APM, the Association for Project Management, publishes the APM Body of Knowledge.

It has two sections: resource capacity planning, which sets demand against capacity

across projects, and resource management, which allocates people to the work.

The syllabus of APM's Project Management Qualification, the PMQ,

asks how resources are allocated in linear and iterative schedules.

Sara: Where do the words differ?

Leo: In three places. First, what a resource is.

The ICB4 lists people, expertise and things.

PMI® splits the team from physical or virtual resources, such as licences.

APM says anything the project needs, but focuses on people.

Sara: Second?

Leo: The person who lends you staff. PMI® and APM say resource manager.

The ICB4 speaks of line management.

Sara: And third?

Leo: The plan's name. The ICB4 asks for a strategic resource plan:

who is responsible for what. PMI®'s resource management plan says how resources will

be managed. APM calls the view across projects resource capacity planning.

Sara: What is the core, whichever exam you take?

Leo: Three ideas. One: a resource is anything the work needs that someone must provide.

People and skills come first, then equipment, facilities, materials and tools.

Money counts too, but the budget has its own episode.

Look hardest for the scarce ones: the one specialist, the one test environment.

Sara: Two?

Leo: You rarely own your people. In a matrix organisation, staff lent to the project

keep their line manager, who decides their time.

So ask early, for named people and set weeks, in writing.

When two projects want one person, settle it by priority, through a route agreed

in advance.

Sara: And three?

Leo: Resourcing never stops, because people fall ill and estimates prove wrong.

So compare planned and real use, and correct early.

When a skill is missing, agree training with the person and whoever lends them.

Sara: Does that change in agile work?

Leo: Yes. In a linear project, you allocate people to activities, and design skills are

needed mostly early. In iterative work, you keep a stable team,

and design skills are needed throughout.

You fit the work to the team's capacity, not the team to the work.

Book shared specialists for each iteration, or build the skill inside the team.

Sara: Now the model, on a free sheet in the description.

Leo: A resource plan answers four questions for each resource: what,

how much, when, and from whom. The ICB4 builds it in two layers.

The strategic layer says who is responsible: who asks for people,

who lends them, who pays for extra, and who settles a clash.

The detailed layer comes from the schedule: each resource, with its amount,

skill and weeks.

Sara: For example?

Leo: Take an eight-month city project that moves parking permits online.

Seven city staff, some lent by departments.

Five supplier developers. One database specialist from IT Operations,

the only person who knows the old data.

And a training room for fifty-eight users.

Each row names who must agree.

Sara: And the skills?

Leo: A skills matrix sets the skills the work needs against each person.

It shows a skill nobody has, and a skill only one person has.

PMI® adds resource calendars: when each person is free.

APM adds a responsibility assignment matrix: who does each work package,

and in which role.

Sara: Next, a small calculation. What is the difference between effort and duration?

Leo: Effort is the amount of work, in person-days.

Duration is the time from start to finish.

Duration is effort divided by the people, each counted by their share of time.

So twenty person-days take one person twenty working days, and two people ten.

One person at half time needs forty. But more people do not always mean less time:

some work cannot be split, and newcomers must learn first.

Sara: And capacity?

Leo: Capacity is the work a person or team can take on in a period,

after meetings, leave and support. In iterative work, it is the planning unit.

Five people with ten working days each give at most fifty person-days per iteration,

before leave and other duties.

Sara: And if demand is higher than capacity?

Leo: Resource smoothing keeps the end date, and resource levelling lets it move.

Both are in the episode on critical path and resource levelling.

Sara: How does this change between Mid-level and Senior?

Leo: First, the two levels. They are this series' own labels.

Mid-level means leading moderately complex projects, the level of IPMA® Level C and

PMI®'s PMP® exam. Senior means leading complex projects and people,

the level of IPMA® Level B and of APM's chartered status, Chartered Project Professional.

At Mid-level, you resource your own project well.

Take Parking Permits Online, a city project that moves resident parking permits

online in eight months. The project manager, Anna, agrees each lent person's weeks

with their line manager, in writing. The data migration depends on one specialist

from IT Operations, so Anna books her early and pairs a colleague with her.

Sara: And at Senior level?

Leo: You design how people are shared across projects.

Take One City Account, a thirty-month city project that brings fourteen online services

under one login, led by Anna some years later.

The city's six integration specialists serve all its projects,

and its portfolio meeting shares them out.

Anna brings the demand for each wave, a group of services that goes live together,

a quarter ahead, with its value and dependencies.

And she develops people: customer-service staff move from counter work to digital

help, planned with the union that represents them.

Sara: Now the drill. A city project is moving resident parking permits online,

before most residents renew in January.

The end-to-end test is on the critical path, and needs four people for two weeks.

Two are service-desk staff, lent by the Customer Service Centre.

A week before the test, their line manager says the desk is short of staff,

so she can release them only half-time.

What is the gap, and what do you do?

Leo: Pause and write your answer. You have forty-five seconds.

Sara: First, the numbers.

Leo: The test needs forty person-days: four people for ten working days.

Two half-time people make one full-time person, so you have three people,

not four. You are ten person-days short: one person for two weeks.

The effort does not shrink, so the test would run longer, and go-live with it.

Sara: And the moves?

Leo: Talk to the line manager today, and ask what the desk needs.

Then offer options. The project pays for a temporary worker at the desk,

so the testers stay full-time. Or bring in a fourth tester, with time to learn.

Or test the riskiest paths first. If you cannot agree within two days,

take the options to the steering group.

Sara: What lifts that to Senior?

Leo: The date has almost no tolerance, so set a deadline for the decision.

Weigh both sides: the desk serves residents today, and a paid replacement protects

the desk and the date. Then fix the system: agree with each lending department its

notice period, and who settles a clash.

And protect the two testers: they should not have to choose between two bosses.

Sara: How do the exams ask this?

Leo: IPMA®'s written exam asks for open answers; at Level B it may be oral.

IPMA®'s certification also includes an interview, where assessors ask about your

own projects, so note one person you negotiated for.

The PMP® exam uses scenarios, and questions built on a case study or a chart.

APM's PMQ asks for short written answers, for example how the life cycle changes

the skills you need.

Sara: Let us recap.

Leo: One. A resource is anything the work needs that someone must provide.

Find the scarce ones early.

Sara: Two. A resource plan has two layers: who is responsible, then what,

how much, when and from whom.

Leo: Three. In a matrix, line managers decide your people's time: ask early,

and agree it in writing.

Sara: Four. Effort is work, and duration is time: effort divided by the people available.

Leo: And five. In iterative work, keep the team stable, and fit the work to its capacity.

Sara: The model sheet and the study handout are linked in the description.

Next time: procurement and contracts.

Sources & further reading

Consult the original publications and authoritative references below. For certification requirements, use the current official documents. Edition-specific page references are included only when verified.

Original and technical references for the related tools