This Server side plug-in Checks free margin for different close positions cases specially when the client do have hedging positions. The plug-in works very effectively cause when someone closes one of the hedging position it considers it as opening a new one, and in that case the Client will not have opened positions less than special percenage like 100% in the level margin.

Groups that you want to active Margin Checker On.
Symbols set that you want to make check margin on.

Margin percentage to specify margin level like 100% or even less percentage