To add a user, go to the menu in the top right-hand corner of your desktop or at the bottom right-hand side of your mobile device. Then, click on "Users" and "Add a user". Finally, enter your user's email address.
If this person is a collaborator (a member of your organization that works with you), click "Yes", if not, click "No". Then, select the Sencrop stations you wish to share with this person by clicking on the "Plus" and click on the green button "Share... Sencrops".