The Power Platform Admin Center allows admins to control the visibility of the Legacy App (Dynamics 365 - Custom) for admins. By setting the "Show legacy app for admins" option to "On," admins can see the app, and by setting it to "Off," the app is hidden for admins. The goal is for all users, including admins, to use only the modern, model-driven apps. For more details, visit the provided link.
Login now to access my digest by 365.Training