Once you have completed an installation of Entree in a new site collection you will be greeted by a registration screen. You will need a licence for each install of Entree inside your tennant.

1. Complete the fields of the form presented to you.
2. Click Submit

The e-mail address will be used to send a licence key to. For the free version you can use an unlimited number of seats. The company size you fill in does not translate to a charge under the free licence.

1. Go to your inbox and see if you have received an e-mail from service@o365apps.com. It contains your licence key
2. Go back to your browser where you just submitted the registration form. You should not see a page where you can leave your licence key.
3. Copy paste in the licence key and select okay
4. The page should reload and start loading the app for the first time.