Can we add DFF/EFF/LOV on Individual Compensation page

We have a requirement from our client to add an additional field on Individual Compensation page where submitters can get list of all active as well as Inactive Employees alongside of amount field.

Basically, once the users/submitters select the respective Option under a particular Compensation Plan, they should be able to see 2 fields- 1 for the amount which is already present and the other to select an employee from list of values. This list of value should have all the employees in the organization.(both active as well as inactive)

I came across some documents as per which we cannot add any DFF on Individual Compensation page.