The Welcome Page settings tells the plugin what URL to send all new users to immediately after they initially registered. This setting thus overrides any other logic / rules that are applicable when the plugin tries to determine where to send the user after he / she signed in successfully with Microsoft.
Depending on your plugin edition the plugin may try to
- Send the user to the URL he / she initially requested
- Redirect the user to a specific URL based on his / her Azure AD group membership
- Always forward the user to a specific URL
- Send the user to the home page of your website
However, when a Welcome Page has been defined, all of these rules will thus be ignored when the user signs in with Microsoft for the very first time to your website.
You can enter the (perma) link for the Welcome Page URL and save the updated configuration. Please note that an absolute URL is expected that starts with http(s)://