# Installing an add-on

You can only install add-ons for existing extensions.

1. Prerequisite
2. The controller must be connected to the internet in order to install add-ons.
3. You are logged in as administrator.

1. On the starting page, click the plus icon.
2. The add-on catalogue is opened.
3. Select the add-on you want to install.
4. A list box is opened.
5. In the Version list box, select the version of the add-on you want to install.
6. Click Next.
7. Click Install.

What to do next

Access to the add-on is only possible with assigned permission. Assign the permission to access the add-on to all users who are allowed to work with the add-on. All users without permission cannot see the add-on on the starting page.

Changing permissions of a role