You could try something like this:
answer = checkCondition();
function checkCondition(){
var gr = new GlideRecord("sys_user_group");
gr.addQuery("manager", user_id); //Looks to see if this user is listed as a manager on any user record
gr.setLimit(1);
gr.query();
if(gr.hasNext()) //If the user is listed as a manager in a group
return true;
else
return false;
}
