1. Select 
Groups
2. Select the group you would like to edit an event in
3. Select the Events tab
4. Select the event you would like to edit
5. Select Settings
6. Edit your event
1. Tap 
Communities
2. Select the group you would like to edit an event in
3. Tap 
4. Tap Events
5. Select the event you would like to edit
6. Tap 
7. Tap 
Edit Event
8. Edit your event
1. Tap Communities
2. Select the group you would like to edit an event in
3. Tap
4. Tap Events
5. Select the event you would like to edit
6. Tap
7. Tap Edit Event
8. Edit your event