When one of your clan members requests reinforcements, a message appears in the chat window. Touching “Donate”, you can choose which troops you want to send to your clan’s fortress:

Troops will appear in the clan fortress of your clan member and disappear from your camp. For this you will get experience. Remember that troops for the clan war are donated separately. The minimum clan level indicates the amount of clan experience gained through participating in clan wars.

The co-leader can: invite players to the clan; accept clan players; upgrade players to elders; promote players to new co-leaders; expel members and elders; send messages to the entire clan. Remember that it takes 1 hour to recharge before you can write a message again.