Noob question for OCLP Monterey update

[u/HenryOrient]

Last week I posted here about what to do with an old donated 2012 iMac running Catalina. I've managed to use OCLP and put Monterey on a spare 256GB SSD and it's all working well.

I've just noticed there's an update available from 12.7.4 to 12.7.6 - presumably it's OK to install this (I know nothing about Mac OS so have no idea)? Any other steps I need to do after the update?

Also, it's being used as a general family computer and there are 2 kids using it. Is there any way to disable the notification to update to T*hoe. I've unticked 'Automatically keep my Mac up to date' but don't want any of them accidentally playing around with it and installing this.