1. Click on the project selection menu in the upper left corner.

2. Select Project Settings from the drop-down menu.

3. On the project settings page, click the Invite member button in the Project members section.

4. On the page that opens, select the role of the user you want to invite. To do this, click on the Choose role field.

5. After selecting the desired role, enter the email address of the user you want to invite.

6. Click the Add member button. After that, information about the invitation should appear below the button.

7. Now you can add another user or confirm the addition by clicking the Send invites button at the bottom of the screen.

8. If you have done everything correctly, you will see a message stating that the invitations have been sent successfully.

9. You can close the window that appears and return to the project settings page. Here you should see the invitation you sent (but which has not yet been accepted).