Sets of Bookmarks each with multiple tabs
I regularly do repeated tasks in different subject areas, for instance, finance, sports, business, etc.. With each of these, I regularly go to a standard set of sites in different tabs.
How in Firefox can I create sets of tabs such that all I need to do is click on one, Finance, for instance, and have it automatically open the set of tabs that I saved in that set? So, then I could open Sports, and just see the regular set of tabs that I saved for that topic.
In other words, using different instances of Firefox, I could open different sets of tabs without having to open those tabs individually every time.