Set up Client ID in Dynamics 365 FO.

Before you close the Azure portal make sure to make a copy of the application id: 

Once you have the Copy of the ClientID in the Clipboard then please add it to the Entra IDs by clicking the "Add new Client ID". 

If you have a need for a Tenant ID or want to override the Display Name then you find this under "ADVANDED SETTINGS" below.