To invite other people to your MeisterTask project go to the dashboard or open the project you want to share and click the info icon. After that switch to the "Members" tab, and invite the user via email. For detailed information see the screenshots below:
1.1. Click info icon on your dashboard.
1.2. Alternatively, go to the project board, and click the info icon then select "Manage" to reach the next step.
2. Switch to the "Members" tab and click the "Add User" button.
3. Invite users via email address:
4. If you decide to remove someone from the project, you just have to click the 'x' button that is displayed next to the email address of the current members.