Covers one method to use parameters in a request offering to drive which group is selected for an approval.
Create a picklist to Contact Group.
Added to the form to fill out
Values filled out
Added the dept field to the request offering. In the department validation, I added the CAB field as an additional field.
Below I added a text field that is triggered off of department and fills out with the exposed field.
Testing shows it to use the CAB selected in the dropdown