For Dynamics365 Unified Interface, the links can be found via the Dynamics 365- Custom App.
If the Dynamics 365 - Customer App is not available, please go to the following article:
Adding Live Assist Links to Site Maps in Unified Interface Apps – Live Assist for 365 Support
From the bottom left menu select the Live Assist option
Then select the Administration Portal link for the Live Assist Administrator page.
Note: The Supervisor Console link is for the Engagement Portal page.
2. Click on the blue button to log in with your Microsoft Dynamics 365 credentials.
3. If you were already logged in to Dynamics, then you're done! If not, you will be redirected to a page where you can enter your Dynamics credentials. (You may also need to grant Live Assist permission to access your profile data.)
4. When you log into the Live Assist Admin Portal you will see an admin dashboard similar to the one shown below: