You must be logged in to OpenTreeMap to add a user to your Tree Map. Once you are logged in, select "Manage" from the navigation bar at the top.
Click on "Users" in the Administration menu on the left.
Enter the email of the user you would like to add, and click "Add User".
If the user has already created an OpenTreeMap account, they will appear immediately under the "Modify Tree Map Users" section. Otherwise, they will appear under the "Invited Tree Map Users" section and will automatically receive an email with a registration link inviting them to create an account.
If you have already invited a user to your Tree Map, you will receive an error message.
Trial Maps: During trial mode, you may invite up to 5 people to your Tree Map.