Manage family macOS logins I have a family with many macOS devices.  Originally I set these up with an admin user with the same username and password on all devices, and I used this to admin parental controls on them.
This has become an issue when the shared password was compromised.
Ideally the admin password on all family devices would have a managed password, and I could change the login password on all devices from one place.
Is it possible to achieve this functionality somehow?  Perhaps there's a iCloud Family feature I'm missing?
Unfortunately, you've discovered the perils of having a single password for multiple devices/accounts. This would be no different than if it were an IT Manager who used the same firmware PIN and admin credentials across all school computers (I say that, because I inherited that exact problem).
Apple ID doesn't haven anything to manage this and &quot;corporate&quot; style solutions like network authentication or mobile device management is simply overkill for what you need to do.  So, the solution is to use a different password for the admin account for each Mac and store them in a good password manager.
I use KeepassXC for this purpose.  My personal stuff (like bank accounts and website logins) is stored on a different service, but passwords for my &quot;infrastructure&quot; is stored here.  All my routers, switches, servers, etc. are stored in KeePass.  KeePass is secure.  If you lose the master password, you're not getting into to it - ask me how I know.
By having a tool to manage your passwords and using different credentials for each device, any &quot;breach&quot; is contained and you don't compromise the rest.