...
If you are running OS Big Sur (11):
You can run MacPractice Builds 13 and 14.
You can run MacPractice Build 14 if you have not updated to MacOS 11.7.7. Build 14 can be run on MacOS 11.7.6 and below.
If you are running OS Monterey:
You can run MacPractice Builds 14 and 15.Please refer to the Monterey compatibility page here if you have not updated to MacOS 12.6.6.
You can run Build 15 if you have updated to MacOS 12.6.6 at minimum.
If you are running OS Ventura:
...
MacPractice Support cannot assist with the act of updating your OS. If you need assistance or support for macOS issues, please contact Apple Support.
How do I update MacPractice?
See this article for a comprehensive guide to Updating.