A Global Administrator with access to Azure AD can configure these settings to allow login to  Epicode-Support portal using office 365 email Id’s.

Step 1. 

Log into aad.portal.azure.com with Global Admin credentials to access the Azure Active Directory admin Center. 

Step 2. 

On a separate tab, navigate to the following link:

https://login.microsoftonline.com/common/adminconsent?client_id=0ea18b65-3afc-4fb3-b5be-7241b04fb272

Step 3. 

Clicking on the link will direct to the following window (since admin is already logged in from Step 1, they will not be prompted to login again). 

The admin will be authorising on behalf of all the users in their org. 

Clicking Accept will redirect them to Epicode support's login page. Continue to Step 4 without logging in. 

Step 4. 

Admin should confirm they see the Epicode-support app in Azure Active Directory, under Enterprise Applications:

Step 5.

Once the admin has authorised on behalf of their org's users, the users can then login to Epicode support portal using their office 365 ID.