License Data Migration Excel Add-on

I will create and assign 19 end users an excel migration job that allows them to import purchase requisition lines into IFS from Excel.

We have only 1 license for data migration excel add-on in our IFS 10 UPD 12. If I understand correctly, the end users who assigned to run a excel migration job don't need a license. We just need to grant them the permission set "FNDMIG_EXCEL_ADDIN" to run the add-in after they install the Add-on. Please advise if I am missing something.