In regards to the Login Items in System Preferences

Hello gents and ladies,

I'm only new here and I'm not really sure if this is the right place to post...

As my title says, I am wondering about how can you lock out or grey out the Login Items in System preferences? As on the second account that belongs to my sister, I don't want her to access the Login Items in Users & Groups. I cannot do it from my admin account, but can do it through HER account, as it seems the login items are not controlled by admin but rather, by individual accounts. I also need to lock up the login items as well on the third account which I call Guest for anyone that wants to use my Mac.

I've spent time browsing through websites. I can't find a solution that works. Is it really possible to lock out or grey out the login items in Users & Groups in System Preferences? If so, how do you do it?

Kind regards,
Helix123

 

I was wondering about that, thank you guys for your quick and helpful responses. I suppose I'll look and see what I can restrict on my sister's account as well as the guests' account.

Kind regards,
Helix123

 

I see, so that makes things easier and I don't have to worry about guests' account, is it? In that case, I'll just worry about the parental controls. Thanks jab6464.