A:AnswerDepending on your purchase format (i.e., ESD or retail box) you may initially need to download and register your product. However, the day to day use of the software application does not require internet connectivity.
A:AnswerPinnacle Studio 25 Ultimate is a Windows only application so will not work on a Mac unless you have something that allows you to do so like Parallels Desktop. This product is available for purchase here https://www.bestbuy.com/site/corel-parallels-desktop-17-for-mac-1-user-1-year-subscription-digital/6479644.p?skuId=6479644
I am not sure what you mean by menus?