Within your clan, tap the STAGE button where you will see your current season and stage.

The currently active stage will be highlighted and contains 3 missions for you to participate in. Tap the “i” button to see a mission's goal and how you will complete it in the game.

Select a mission and choose a room: Minor, Major, or Grand. Missions are identical regardless of what room you select.

Start spinning to achieve the clan goal as many times possible as long as the mission is active. If you forget what the mission goal is, you can always click on the Clan icon to see it!