Moving columns and fields around

Is it possible to change the order of columns in the grade book? I have imported some extra columns and want to move them to the left end so they are nearest the student name. I can't work out how to do it.

From the grade book view, Tap on the Tools icon (top bar) / Columns and here you'll be able to rearrange your columns at will, with a drag&drop.

You'll find here a short video on this

Thank you. I did have a look through the videos and articles and missed this one. Slight embarrassment on my part!