Prop Cleanup

I am currently working on setting up an RP server. I have managed to get everything setup except when a player logs off of the server all of the player’s props are “cleaned up” about 2 minutes after leaving. Is there any way to disable this? It seems to be something garry’s mod is doing and not the RP gamemode. Thanks!

Simple Prop Protection, Options (or Utilities) and go to Simple Prop Protection, change the options.

Thanks. I used the menu to figure out the variable names and set those in the server.