Computer Configuration > Administrative Templates > Microsoft Edge - Default Settings (users can override)
Both
HKLM\Software\Policies\Microsoft\Edge\Recommended
This policy lets you decide whether users can have their membership info (for example, program name and membership number) automatically saved and used to fill form fields while using Microsoft Edge. By default, users can choose whether to enable it or not. If you enable this policy, users can only have their membership info automatically saved and used to fill form fields while using Microsoft Edge. If you don't configure this policy, users can choose whether to have their membership info automatically saved and used to fill form fields while using Microsoft Edge. If you disable this policy, users can't have their membership info automatically saved and used to fill form fields while using Microsoft Edge.