When I send an excel workbook and the recipient opens the it, the book
reverts to their formatting.

2 examples:

1. When I send the workbook and the sheets are in landscape, they will
revert to portrait.

2. The margins are changed and therefore all of the columns will not print
on 1 page.

I am working with employees who are not very computer literate, so it's very
important that all they need to do is fill in a few numbers. I need
everything to appear exactly as I send it.