Using a user account with administrator rights, login to Azure Active Directory at https://portal.azure.com.
Search for and select Azure Active Directory.
Select Users and add a new user and set a unique descriptive name for their function. For example, IPOLink. This user does not require any user licenses.
Select Assigned Roles.
Select Add Assignment.
Select Teams Administrator and click Add.
After creating the user:
Login at https://admin.teams.microsoft.com using the user details and set a password when prompted. Do not enable multi-factor authentication.
If a password expiry policy is in place for users, you must disable it for this user. Note the user's UserID. Then, using PowerShell, connect to Azure Active Directory and use the following command:
ADDITIONAL INFORMATION:
Get -AzureADUser -ObjectId <user ID> -PasswordPolicies DisablePasswordExpiration