Reply To: insert new pages but skip numbering

The pages still have to be numbered somehow. You can go to the section start where the insert starts, and start it at “A” or something (or “B” if an even page). Then go the section start after the insert, and resume regular numbering:

For example:

Previous chapter ends on page 98.
Section Start “A” for the six pages (ends on “F”).
Section Start after page “F” (page 99).

Just be sure you don’t have folios on those insert pages.

So far as bleeds, I always set up my files whether they have bleeds or not via document setup. That’s mainly because once in a while they will stick in a photo insert or something.

And I’d probably make a separate master page for your insert.