Hi!
Anti-stick function is defined in the Arc-End condition file which you call with ARCOF AEF(1) instruction.
To change this file do the following:
-Switch to TEACH mode
-Press: DISPLAY -> FILE -> WELD -> QUIT -> choose proper file number (1 in your example) using FILE UP and FILE DOWN softkeys -> press EDIT and now you should be able to change ANTI-STK option and other Arc-End parameters.