Hi,
Thank you for writing to Microsoft Community Forums.
We understand the concern as you want to use the same Microsoft account for both user account to sync the settings. Unfortunately, this is not possible as of now due to design limitation.
However, we commend and appreciate you for recognizing this behavior. We recommend you to provide your valuable feedback in Feedback Hub. This is one way where our design team will be able to receive feedback, suggestions and ideas from our customers
In this scenario, we would suggest you to install and sign-in all the apps you want to use on both user account with the same Microsoft Account to sync their settings and data, for example Microsoft Store, Edge, etc.
Regards,
Aditya Roy
Microsoft Community – Moderator