Configure Online Settings
If you are using Document Library Tagging, SharePoint High-Trust authorization is recommended.
- Expand the SharePoint Online option.
 - Choose a Security Model

 - If you select a High Trust Certificate model, specify the following.

 - If you are not using the Rules Engine Tagging feature, then Enable Synchronize MMS is optional.
 - Enable Document Library tagging: Enable this checkbox to turn on document library tagging capabilities.
 - If you select an App Only with User model, specify the following:

- Tenant Name: Enter the tenant Name
 - SharePoint Root Uri: Enter the tenant Root Uri
 - SharePoint Admin Uri: Enter the tenant Root Uri
 - Authentication EndPoint: Enter the Authentication EndPoint
 - Application Id: Enter the application id from the App Registration in Azure
 - User: Enter a valid user name
 - Password: Enter the user's password
 - If you are not using the Rules Engine Tagging feature, then Enable Synchronize MMS is optional.
 - Enable Document Library tagging: Enable this checkbox to turn on document library tagging capabilities.
 
 - Tenant Name: Enter the tenant Name
 - If you select an App Only with Certificate model, specify the following:

- Tenant Name: Enter the tenant Name
 - SharePoint Root Uri: Enter the tenant Root Uri
 - SharePoint Admin Uri: Enter the tenant Root Uri
 - Authentication EndPoint: Enter the Authentication EndPoint
 - Application Id: Enter the application ID from the Azure App Registration
 - Application Certificate Name: Select and import the Certificate loaded in the Azure App registration. This will add the Certificate to the appropriate certificate store.
 - If you are not using the Rules Engine Tagging feature, then Enable Synchronize MMS is optional.
 - Enable Document Library tagging: Enable this checkbox to turn on document library tagging capabilities.
 
 - Tenant Name: Enter the tenant Name
 - User Model:

- Tenant Name: Enter the tenant Name
 - SharePoint Root Uri: Enter the tenant Root URI
 - SharePoint Admin Uri: Enter the tenant Root URI
 - User: Enter a valid user name
 - Password: Enter the user's password
 - If you are not using the Rules Engine Tagging feature, then Enable Synchronize MMS is optional.
 - Enable Document Library tagging: Enable this checkbox to turn on document library tagging capabilities.
 
 - Tenant Name: Enter the tenant Name
 - Continue to the next topic.