In Blackboard Ultra View courses the accommodation is set on the student's account and then it applies to every exam/assignment in the course.
Click in to the course and go to the roster:
Locate the student. Click the ellipsis to the far right and then click Accommodations:
Select whichever accommodation you need:
Here is an example for someone needing time and a half for exams. This applies to all times assessments in the course: