With it's 1.3.0 JailStickPlus comes with:
-A beta of Robberies: You can now set a robbery by /setrobbery <name> <radius>. To let the players start a robbery you simply place a sign with "[Robbery]" on the first line, the robbery's name you put into the <name> section of the /setrobbery command, and the amount of money that players could steal from that sign. Make sure to place the sign into the robbery's radius!
-/unsetrobbery <robbery name> : Unsets a robbery.
-/crew < add / remove > <Player> : With this command you can manage your crew.
-/crewleave : Makes a player quit whatever crew they're in