When employees plan and have received approval for a sabbitacal, this usually consists of a savings phase in which a reduced salary is paid out for the same number of hours, which is then paid out over the corresponding period of time during their absence. 

It would be nice if Projo could map this.

Let's fix it this way:
A separate contract period will be set up for the sabbatical period (both phases). Here, working hours remain the same over the contract period, but the salary is reduced. For the period of absence, we have created our own absence, which reduces the target hours but does not generate any vacation entitlement.

This works well so far, but the following problem remains:

For the savings period, the imputed hourly rate is reduced, so that the project is only burdened with these costs.
During the period of absence, the salary is attributed to overhead costs, as no productive hours are worked.

There are therefore different requirements in terms of project controlling and liquidity planning.

For project controlling, the actual hourly rate would have to be calculated; for liquidity planning, the amount paid to employees would have to be calculated.

So far so complex, but from our point of view it is a useful functional extension, unless there is already another solution in Projo that I have missed. (PS. I'm not sure in which tab I should place the request, so please feel free to adjust it)