Insert formatted blank page before section break?

Why do I need this? The normal blank page works fine if manuals are double-sided, but I get questions about missing pages if distributed as one-sided so people can make copies.  I used to manually put in the "intentionally left blank" phase as needed, but it adds a lot of proofing time since they always jumped around during editting.

I use to run a macro in word 5 to do something similar in that I had a standard header that used sheet numbering within chapter/section etc. I had a macro that I used on that but I found that it was easiest to apply it after writing the document. what I used to do was have the macro insert a Page Break & 'key phrase or character string' with the text I wanted but have that key phrase set to hidden. On editing when the macro was run it would remove all pages from the document that had the key phrase and then start from the beginning of the document inserting new pages with the key phrase and text just before a change of section. I no longer used Word 5 so I have lost the MACRO, but the principle is still valid and it should be possible to  write the same in the latest versions.