Here is how you transfer the ownership and all rights on a map to someone else:

1. Open the map. 

2. Click on “Share”, then write your team members email-address, and click on "send invitation"

3. In the same window, set the permission level to "admin".
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4. After setting the admin permission, scroll down and choose "Transfer ownership". Type in the person's username and click "yes" to confirm. Now you have transferred the ownership of the map.

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