I can always do the Control Click, that isn't the issue. But in Windows I could always limit my selection to the latest set, for example if I run Calibration and CosmeticCorrection, I have images with both a "_c" and a "_c_cc" suffix. If I want to run SubFrameSelector on just the second set, I could just put in *c_cc* and it would knock out the first set so I didn't have to individually select each frame with Control Click. I am hoping I can do the same in Linux.