1- Log into the vhost area here: https://manage.edis.at/vhost
2- In the left menu, go to Apache -> Access Protection
3- Insert the name (and path) of the directory you would like to protect.
4- In the Name Field, insert the text you would like to appear in the password popup windows when accessing the protected directory.
5- Click on Create
You can add multiple user accounts and give them access to your protected directory using the small green + icon as shown in the following screenshot