In this video, the presenter demonstrates how to create a global administrator account specifically for use with OnDemand migration. The process involves logging into the Office 365 admin portal, navigating to the users section, and selecting "add user" to create a new account. The presenter explains the importance of selecting the appropriate roles, such as global admin and exchange admin, to give the account the necessary permissions for migration activities. The video also mentions the need to create an impersonation role in the Exchange admin console and associate it with the new admin account. The presenter concludes by reminding viewers to repeat the process for the target tenant if necessary.