Discretional [adjective]
Definition of Discretional:
possible; available as choice
Sentence/Example of Discretional:
I have no idea of instructions, unless they are obeyed; a discretional power is incompatible with them.
The pope, then, had this province only as cardinals have pensions from the king, which pensions are discretional.
As their powers were largely discretional, with undefined limits, the manner in which they were exercised was sometimes eccentric.
Where a spelling makes sense, and is merely discretional and not obviously incorrect, it has been retained.
The language of the constitution is very different when regulations are not left discretional.