You add the transition you want to use to Favorites.
If that is the only favorite you have then when you apply random transition effect to all, you will have your favorite transtion applied to all images on the time line.
If you want a certain group of transitions, you add the transitions you want to favorites, then apply random transition effect to all.
Carl312: Windows 10 64-bit 8 GB RAM,AMD Phenom II X4 965 3.4 GHz,ATI Radeon HD 5770 1GB,240GB SSD,two 1TB HDs.