To change a service configuration you need ChangeServiceConfig() or ChangeServiceConfig2().
Look at the lpServiceStartName parameter to set the user account and dwStartType for auto/manual etc.
There shouldn't be too much problem with accessing this via Win32::API.
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
Lingua non convalesco, consenesco et abolesco. -- Rule 1 has a caveat! -- Who broke the cabal?
"Science is about questioning the status quo. Questioning authority".
The "good enough" maybe good enough for the now, and perfection maybe unobtainable, but that should not preclude us from striving for perfection, when time, circumstance or desire allow.