Currently there are no Class, Department, and Location to Entity Records. A possible alternate solution is to assign a Custom Segment to the Entity and source to new transactions.
Solution
1. Navigate to Lists > Relationships > Customers
2. Customer line: Click Edit
3. Hover over Customize
4. Click New Field
4. Label: Enter Label
5. Type: Select List/Record
6. List/Record: Select Department (or Class/Location)
7. Store Value:Enter Checkmark
8. Click Applies To
9. Enter Checkmark for Entity records where the classification needs to be set
10. Click Display
11. Subtab: Select Main
12. Click Save & Apply To Forms
13. Under the Show column, mark the checkbox for the forms where the custom field needs to be added
14. Click Save