Clicking [Set {seqn} variable] just to reset the counter to 1 can be accomplished by Option+clicking that button, but it would be nice if there was only one dialog box for both functions. There's plenty of room to combine the two, and it would be one less click (which for me is a frequent extra click). So please add a text box for {seqn} on the main dialog and a [Reset] button. Then you would only need the main Rename Photos dialog.