Capacity and staffing
How to assess your internal capacity for an event
The event is approved, and you need an honest view of whether your own people have the time and skills to deliver it.
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The short answer
An internal capacity assessment compares the hours the event needs, period by period, with the hours your people can realistically give, and separates gaps in hours from gaps in specialist skill.
The outcome is one of three: your team can deliver it, it can deliver it with specific help, or the event needs to be reduced or moved.
Hours, availability and skill are three different questions
Hours needed come from the tasks. Hours available come from what each person can truly spare once their normal job, leave and other commitments are counted. Skills are whether anyone has done the task before.
A team can have enough hours and still lack the person who knows how to run a registration system. Keep the two gaps apart.
The decision sequence
- List the tasks by workstream and period, starting from your workload estimate and staffing plan.
- Estimate the hours each task needs. Use ranges where you are unsure.
- Ask each person what they can realistically give each period, after their normal duties, planned leave and other events. Write down their answer, not the answer you hope for.
- Subtract available from needed for each period. Run the capacity gap estimator or a sheet.
- Mark each task as needing a specialist or not, and whether anyone internal has done it before.
- For each gap, choose: stretch the timeline, reduce scope, borrow capacity internally, or bring in outside help. Use the outsource-or-keep-in-house worksheet for the comparison.
- Show the result to the event owner with the assumptions, so they can accept the risk or release resources.
A simple period view
| Period | Hours needed | Hours available | Gap | Specialist gap? |
|---|---|---|---|---|
| 8 to 6 weeks before | Needed minus available | Yes / No | ||
| 6 to 4 weeks before | ||||
| 4 to 2 weeks before | ||||
| Final 2 weeks | ||||
| Event days and wind-up |
Counting availability honestly
- Use hours after normal duties, not contracted hours.
- Count the same person once. A person cannot be fully on this event and fully on another project.
- Physical posts on the day cannot be covered by someone who is also on another post.
- Remove leave, other events, month-end or audit periods and known peak times.
- Do not count people who have not agreed. Ask first.
- Keep unpaid or volunteer time separate from paid time. The internal effort cost calculator can show the opportunity cost without turning it into a cash invoice.
Reading the result
Small gaps in non-critical periods can be absorbed by moving tasks. Large gaps in the final fortnight, or specialist gaps in a critical task, are the ones that need a decision now.
A gap is information, not a failure. The assessment is useful if it is made early enough to act on.
Worked example · Fictional example
An association secretariat of four planning a two-day conference
Fictional organisation and figures, for illustration only.
A fictional association secretariat has four staff who also run membership renewals and the annual report. The estimate for the conference is about 480 hours across ten weeks. After normal duties and planned leave, the staff say they can give about 320 hours, with the lowest availability in the last three weeks because of the annual report.
The gap is 160 hours, concentrated in the final period, plus a specialist gap in running the registration system and the on-site programme. The secretariat head chooses to move the annual report deadline, ask the registration system supplier to run on-site support, and appoint a project lead for the final four weeks. The assessment goes to the council with those assumptions.
Use this yourself
Internal capacity assessment worksheet
Copy into a sheet. Enter your own hours and assumptions; nothing here is a benchmark.
| Workstream or task | Period | Hours needed (range) | Who can do it | Hours they can give | Gap | Specialist skill needed? | Chosen response |
|---|---|---|---|---|---|---|---|
| Venue and supplier coordination | Yes / No | Stretch / Reduce / Borrow / Outside help | |||||
| Programme and speakers | Yes / No | ||||||
| Registration and communications | Yes / No | ||||||
| On-site delivery | Yes / No | ||||||
| Budget tracking | Yes / No |
Handle it in-house, or bring in help?
Your team can usually handle this when
- The gap is small, outside the final weeks and has no specialist requirement.
- Your team has run this format before and has the time written down.
- Another internal team can lend capacity under an agreed arrangement.
Outside planning help earns its fee when
- The gap sits in the final weeks or in a specialist task nobody has done.
- Everyone's availability depends on another project that is not yours to move.
- The owner needs a scoped, independent view before approving scope or spend.
Want a second view on what your team can carry?
A conference project lead can take your task list and availability, build the period-by-period gap view, and set out the options for the gaps. If you want a bounded review, the planning diagnostic is built for exactly that, with a prioritised action plan. The organiser decides which gaps to close and how.
Questions organisers ask
How accurate do the hour estimates need to be?
Ranges are fine. What matters is the period in which the gap falls and whether it is a skills gap, not a precise total.
What if staff say they have more time than they do?
Ask each person to show the other commitments in that period. Use the lower figure for planning and update it as work progresses.
Should volunteers be counted?
Count them for tasks they are trained on and have agreed to, separately from staff, and not as cover for the critical posts on the day.
Does the tool decide whether to outsource?
No. It shows the gap and the comparison. The decision, including whether to keep everything in-house, remains with the organiser.
Related resources
Content record: Draft. Written from the cited sources and checked by automated rules; not yet independently reviewed.