Buiding macro for a Safari Extension

I just started here but have owned a number of Stairways products.
I am trying to set up a macro with a Safari extension, Matter.
When I click on the Matter extension in Safari, it gives options for Reader and Save.
As my Safari window is not always in the same location, I am trying to find how to have it "click/select" on Matter and then click/select either Reader or Save. I have a screen-snap of it when I can send an image if allowed.