Where can I see who joined my board?

You can see who joined your Board on the 'Members' section both on your app and desktop platform.

To see who has access to your board:

1. Open the Boards app, enter your board and tap on the share icon +👤
2. Tap the 3 dots
3. Tap View Members
4. Tap on the email if you want to see the access rights of each user
5. You can then change the access rights of each user

Check out this article (iOS/Android/Desktop) to learn more.