It's so annoying when I call someone in war, but another person attacks. Under the scout button, you would get a "call" button. Then the leader or a coleader would have a button next to your clan name, and there would be a list of pending base calls. They would be able to accept or decline. if accepted, then the person who called it would have their name next to the base. Once the person attacks in war, then the call dissapears. You can only call your first attack. I think this would help out a bit. Tell me in the comments otherwise. Thanks!