I had the same problem last week but I managed to find solution - Adding these three lines enable all three "first aid"-modules for the group (You may still need to place the modules on map):
nul=[groupname] execVM "\ca\Modules\AIS\data\scripts\IS.sqf";
nul=[groupname] execVM "\ca\Modules\BC\data\scripts\BC.sqf";
nul =[groupname,leader groupname,true] execVM "\ca\Modules\FA\data\scripts\FA.sqf";