OIE 12.2.4 Manage Proxy Configuration

We are in the process of upgrading from 11.5.10.2 to 12.2.4  and would like to know - In 12.2.4 is there a way for the System Administrator to assign Proxy access for other users?

For example, we have several employees who do not use E-Business Suite and never log into the system.  An administrative person is assigned to enter these employee expenses.  We would like to use the My Allocations functionality to be able to default accounting information into the Expense reports.  When an administrative person is entering an expense for someone else they are unable to use the My Allocations feature unless they are set up as their Proxy.