You choose the rate per employee: when inviting, when approving a request, or in advance in the member group (under Reimbursement).
You manage the reimbursement rates themselves in Reimbursements > Settings. You also see them under Price groups, but you don't manage them there.
CREG rates: there are four (national, Flemish, Brussels, Walloon). They are updated automatically every quarter. You cannot change them manually; you choose which rate to use. The region determines the amount of the reimbursement. More info: CREG rate.
Custom rate: for an employee living outside Belgium, create a custom rate with + New. This is not adjusted automatically. In Belgium, you may only use the CREG rate for home charging reimbursements.
You can see which rate is set for each employee under Reimbursements > Employees.
Keywords:
reimbursement price group | reimbursement price | price groups reimbursement | change creg | change reimbursement | manual rate | custom rate | foreign rate | home charging reimbursement rate