Swap Artis info with Album Artist Info

My first post so be gentle with me!!. I am trying to swap over the Artist info with Album Artist info and am struggling to do it. Can someone please post some detailed instructions on how to do it. I know It is is the Actions menus but I am getting lost in the terminology. Thanks

Create an action group that has the following (4) actions in it:

Format value (for a user-defined field) temp_artist; format string: %artist%
Format value for ARTIST; format string: %albumartist%
Format value for ALBUMARTIST; format string: %temp_artist%
Remove field temp_artist