Individual Values Balance Reconciliation

Hi IFS-Community, 

does anyone know if its possible to set up individual maximum values for the time balance and execute these values with balance reconciliation?

Example: the standard maximum value for the Time Balance is 75 hours. (gets cut down monthly)

1. a parttime employee with 50% employment is allowed to have 37,5 hours in his time balance 
2. another employee negotiates with HR, that he/she is allowed to have 200 hours in his/her time balance

Thanks for your help, 

Veronika