Inviting users through the Admin Portal

Go to app.teamsyncbookmarks.com
Log in
Click either the "Add user" or "Bulk add" buttons depending on the number of users you want to invite

Inviting users through the app/extension

Click on the "Add user" icon to the left of the "Settings" icon next to the TeamSync Bookmarks group name in the app
Add the emails of the users you want to invite into the text box. Place one email per line
When you click "Next," users with the emails you provided will be notified with an invitation to your group
The user will also get an email from TeamSync Bookmarks inviting them to your group
If a user isn't able to join your group, the likely reason is that they didn't sign up with the email that you invited them with