Absolute Free MCE-Con-201 Exam Practice for Comprehensive Preparation 

Create each user in both BUs > Map the same CRM username > Guide those users to find assets by navigating across BUs using the business unit switcher in the Marketing Cloud Account Engagement Classic App

Create each user in both BUs > Map the same CRM username > Guide those users to find assets by navigating across BUs using the business unit switcher in the Marketing Cloud Account Engagement Lightning App

Create each user in a single BU > Create a folder with the exact same name > Associate assets that are needed across regions to the folders that share names across BUs

To give a seamless transition between pages and form that you host and your Marketing Cloud Account Engagement hosted assets.