Hi Rajat,
Yes, its possible.
Setup a after startup microflow and create a user account with Administrator role and creds that you’d want. You should override the password later via screen so that anybody who has access to the code cannot simply login with the credentials.
However you can also check the documentation here and just change the general MxAdmin to something custom if that suffices your use case.
Hi Rajat,
you could create a new local user with the Administrator User Role. Just use the Account Overview page of the Administration Module while being logged in as MxAdmin.