How do we identify if the FA page supports Express Mode versus Advanced Mode

Summary: Our Development or TEST environment's falling under one of the Subscription ( HCM) under the Oracle account does not have default wiring with the VBS Instance provisioned for the Oracle account so we cannot access VBS directly from the FA Redwood Page hence accessing the VBS instance using the standalone URL and then mapping the respective environment to pull in the FA Page and perform the required extensions on the FA Page, the challenge here is when doing so majority of the Pages are opened in the Advanced mode and not giving us an option to switch to Express mode, So Can you :