JCam Loc: MD Eastern Shore

I downloaded Adjust 5 last week and have been experimenting with it; I'm confused about several things, but first.

When trying the presets in any of the Collections you get a small preview of your picture with the preset applied that lasts for a few seconds--that's great, but after it closes there is a green dot to the right of the preset tried , whether you clicked on the preset to select it or not, and the "Original" or "Processed" label above the large preview changes to "Processed", selected or not. If you then put the cursor on another preset without clicking on it, you get another green dot.

Do all those dots indicate that the preset(s) is/are being held for "Applying" or just that you have looked at them. If the 'green dot presets' are being held for application, how do you get rid of one or more without going to "Reset" and having to start all over? Will the "undo" button at bottom right do it?

As an "Adjust" beginner, I want to see what they all do before making a selection, applying it, and moving on to the 'fine tuning' controls on the right side.