Is there a way to use EP without posting any GL entries? Should I use a voucher to input expense am

Hi, I am trying to figure out if it is possible to use the EP module from REM but not use any GL entries to create estimated and actual billing amounts.  Where would I input the lines for amounts?  Can I add the Recurring Billing Information EXPE, CAM, and EXPA, and then have the line amounts read by the R15110?  Please help.

Thank you,

Colleen