Add Active Admin Users to Group

When a new active user with the “System Administrator” profile is created, this trigger automatically adds them to the “Admins” public group, streamlining group membership management.

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Solution:

trigger UserTrigger on User (after insert) {
            if(Trigger.isInsert){
            if(Trigger.isAfter){
                               UserTriggerHandler.addUserToGroup(Trigger.new);
                  }
       }
}
public class UserTriggerHandler{ public static void

          addUserToGroup(List<User> usList){

                Id systemAdminId= [SELECT Id FROM Profile WHERE
                             Name=’System Administrator’].Id;

             Id groupId=[SELECT Id FROM Group WHERE Name=’Admins’].Id;
             List<GroupMember> groupList = new List<GroupMember>();

             for(User us : usList){ if(us.ProfileId == systemAdminId
                             && us.IsActive){ GroupMember grp= new
                             GroupMember(); grp.GroupId=groupId;
                             grp.UserOrGroupId=us.Id; groupList.add(grp);
                             }
             }
                             if(!groupList.isEmpty()){
                                    insert groupList;
                              }
             }
}