If your Guild Leader has been absent for a while in the game, a different player can Mutiny and take leadership of the Guild. When allowed, a "Mutiny" button will appear next to the current Guild Leader's name in the member section of the guild.
This timeframe for the Mutiny button to appear depends on your current position in the guild:
- Officers: 2 weeks of the leader being offline
- Members: 3 weeks
- Recruits: 4 weeks