registration and stacking tabs on the GUI

I have a question about the registration and stacking tabs on the Siril main GUI. For example, if I click on stacking, I see a new panel that shows the following:

Sequence stacking
Stacking result

I’m thinking clicking on one of these should open a new menu like stacking options, etc. but nothing happens. Same behavior with the Registration tab. Am I missing something?

I’m using Win11 Pro 25H2 on a Lenovo X1/C laptop, Siril 1.4.0, but saw the same behavior in RC1/2. This might be operator error on my part, so I’ll hold off sending logs and screen shots.

You need to load a sequence first.

Oops. I figured it might be operator error. I was just trying to see what the default values and ranges are for some of the stacking options, not thinking that I’d have to start an actual process to see these. Thanks.