Manually adding users to paid subscriptions in 3.8.4

[BirdOPrey5]

I have 20 or so users who sent me paypal donations before I had the formal subscription system up and running so for now I've manually added them to my premium members usergroup so they get the benefits of membership. I'm looking for a way to manually add them to an existing subscription, where I can set the expiration date. I see this is possible in VB4:
https://vborg.vbsupport.ru/showthread.php?t=236590

Any chance it can be done in VB 3.8? There is no "Control" on the drop down menu in 3.8

--------------- Added [DATE]1274375575[/DATE] at [TIME]1274375575[/TIME] ---------------

I figured it out, it was staring me in the face the whole time. "Controls" was a drop down menu in Subscription Manager and sure enough one of the menu options was "Add User".