Transitions using 2 Tracks

Hi. I’m new Shotcut and new to video editing in general. I’m creating transitions using two different tracks and really liked the saturation option that I found in a drop down list. I can’t for the life of me figure out how I originally accessed this option. I searched the forum, and maybe I’m not using the correct terminology, but I can’t find any references. How do I access these options?

Select clip, then go to Filters>Saturation

You are probably referring to track blending mode. Select a video track by clicking its track header and then view Properties.