Something to keep in mind for faculty and staff with newer Mac's running Apple Silicon (M1/M2/M3), you may not be able to do the updates as it requires the OIS administrator login. In order to run updates you will need to bring them to Campus Support in RPL150.
How to update post Sonoma:
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Open Software Update:
From the Apple menu in the corner of your screen, choose System Settings. Click General in the sidebar of the window that opens, then click Software Update on the right.
If you don't have System Settings in the Apple menu, choose System Preferences instead. Then click Software Update in the window that opens.
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When you open Software Update, it automatically begins checking for new software.
If new software is available for your Mac, click the button to Update or Upgrade. What's the difference between an update and upgrade?
If new software is not available for your Mac, Software Update says that your Mac is up to date. Software Update shows only software that is compatible with your Mac model. For example, if your Mac is not compatible with a later version of macOS or Safari, Software Update does not offer it to you. Which Mac models are compatible?
Before installation begins, you will be asked to enter your administrator password. It's the password you use to log in to your Mac. Forgot your password?
During installation, your Mac might restart and show a progress bar or blank screen several times. If installation is not successful, learn what to do.
This example shows Software Update in macOS Sonoma. Software Update in your version of macOS might look different.
https://support.apple.com/en-us/108382
How to update pre Sonoma:
In earlier versions of macOS, choose Apple menu > System Preferences, then click Software Update.
Or use Spotlight
in your menu bar to search for “Software Update,” then open it from the search results.