If the user is not yet active, you can activate it by sending an email notification.
See steps below:
1. Go to Admin > click Users.
2. Select the users that you would like to activate.
3. In the Actions drop down menu, select Activate Users.
4. A pop-up screen will show up, click Activate. By clicking activate we will send out an activation email to your users so they can start managing their expenses.
NOTE: Sending an activation e-mail to the users you activate is crucial so users can set up their password for their account.
To know more on how to add users, see article: