olemus
Wiktionary:
someone who proposes; someone who makes a proposal

näiteid
ISO/IEC 30122:
organ, kellel on õigus esitada muutmistaotlust
ISO/IEC direktiivide mõttes
= body allowed to submit a change request
Note. The proposer is the body having the right to submit the request in terms of ISO/IEC Directives.