Installing the app is straightforward. First, go to the marketplace and search for the app (or use this link).
Once you open the app page, select the install button.
Next, you will be prompted to fill out your domain.
The App gets automatically loaded and no banking details are required. The app will get listed in your Admin Center under the Zendesk support Apps. Please check if the App is activated by clicking on the cogwheel.
If you click on change the settings, you can enable role or group restrictions.
By now the App has been installed It would be advised to restrict access for admins