There is a new option to merge multiple tournaments into one. Merging tournaments is useful when you have multiple tournaments happening at different times that function as qualifiers for a graduated cut. (If all your qualification games are played at the same time you would be better off with one tournament that use the option, "Pair players within the same team during swiss rounds, treating each team as a separate pod.") The typical example of this are the FFG Worlds tournaments, with a Day 1A and a Day 1B leading up to a Day 2 where the best players from both days progress to a graduated cut of either more swiss rounds or directly to elimination rounds.

Find the "Merge Tournaments" button in the tournament page menu.