Change one person's hours
- Open People, choose the person and go to their Employment tab.
- Choose Record a change.
- Under Working pattern, choose Custom days and hours.
- Tick the days they work and enter their Weekly hours, for example 12.
- Choose Continue, then pick the date the new hours start. A past date adds it to their history; a future date schedules it.
- Add a reason if it helps, then choose Record change, or Schedule change for a future date.
Where their hours come from
- Each person's days and weekly hours are on their Employment tab, under Working pattern.
- While a named pattern is selected, Weekly hours follow that pattern and can't be typed in. So if a part-timer shows 17.5 hours, it's usually the pattern they're on.
- Hours can also come from a spreadsheet import, or from Custom days and hours entered earlier.
- Full-time weekly hours on the Working patterns settings page only sets what counts as full time. It doesn't change anyone's hours.
Use a working pattern instead
Use a named pattern if they book leave in hours, or if several people work the same hours. Open Settings and choose Working patterns, then choose Add pattern and enter the hours for each day. Then record each person's change to it on their Employment tab.
A pattern people are already on can't be edited. Choose Copy to make changes, save the copy with the new hours, then record each person's move to it.
Hours that were always wrong
If the hours were entered wrongly and never really changed, choose Correct information on their Employment tab instead. It fixes the record without adding a dated change.
What happens next
Their share of full-time hours updates from that date, and so does a part-time leave allowance. Check their Time off tab afterwards.