CDS Views for Person Manager External ID

Hi Experts, Please Help me wth the CDS view for Manager in HR - Technical Filed Name in Standard API is PersonManagerExternal ID Person Work Agreement Type - To Define WOrkforce Person ( BUP003 Role )and Service cost level , however we know that Supplier ID is prerequisite for mapping Service cost level of the employee Associated to BBP005 role . Both of them Belong to I__Workforce person API Thanks, V