Through this wiki I will give you some useful hints in case you want to run payroll for several countries for which there is no SAP standard payroll driver in the same instance .
You can see whether a localization is available for a given country at the following link in SAP marketplace:
It is not possible to have several countries using molga 99. Therefore I recommend to use the international payroll driver RPCALCX0 (Molga 99) as a template. You can create a payroll driver under the specific country molga by copying the mentioned template.
E.g. you want to run payroll for Cabo Verde and there is not a standard payroll driver for that country:
Go to transaction SE38 and copy RPCALCX0 into a Z* program:
Finally change molga '99' to molga "CV":
Whenever you do a modification, use a copy of the include you are going to modify.
It's not enough to create a payroll driver, but you require a country grouping and a cluster ID for saving the payroll results.
Check SAP note 212246 for additional information.