When you say "add" or "edit"... The only way to do that is thru the "CollectionLibrary" admin utility. That is a special software application that must be installed on a Windows PC (or computer that allows you to run a windows application). I never supported Mac or Apple and I never planned to.

But.. access to the CollectionLibrary "website" to view anyone's site should of course work on any computer with standard browser including macs.