Newbie here, using the trial version

I am after some advise on how to rotate page (with contents).
I know this has to be a simple procedure, but for the life of me I cannot find it.
I have checked the documentation, which references it at least 4 times, but with no specific way to find it.
I have checked this forum, and of course have spent hours with the program itself to no avail.
I have found rotate contents, but this does not work in this situation.
I work for a large format printer that specializes in 50m long banners.
I am trying to make an action that can rotate a customers art, place variable text top & bottom, and then rotate back again.
The end result being text running up the sides of the banner.
I could find no way to rotate & add the variable text to the left & right edges, hence the need to rotate the page and add text to the top & bottom.
I have worked out everything for the action except the rotating of the page.
Maybe I'm over thinking the whole process and missing the obvious.
Any help appreciated.
Cheers
Tim Murphy