OLC - How to change and auto populate the value of Audience Evaluation to Once

Summary:

We wanted to change the value of Audience Evaluation from Continuous to Once which should auto populate every time we create learning assignments.

Content (please ensure you mask any confidential information):

Usually when we create,

Learning assignment we use Audience Evaluation to Once

Learning Assignment profile we use Audience Evaluation to Continuous

But as of now, even when we create Learning assignment by navigating(My client groups> Learning and development> Learning assignment), Audience Evaluation value showing as Continuous which should not as though we are not creating ongoing assignment and its for existing learners and most of our assignments are one-time setups. If set as continuous, this could unexpectedly add people.