In the regression from points workflow we do a lot of selection to select points to include in regression line.
It is not always that selecting all and use tolerances give good result.
Sometimes it is easier to manually select the points, at least give the feeling to have full control.But it could be time consuming. So what if you delete the regression line ? Start from scratch !
So it could be useful to save the selection set to reuse later.Remember you have Choose Previous that is also good to know, but it is just to recall the previous selection set.
Named group is the way: