When I want to complete filling in an envelope, how do I put the size of a business envelope, the addresse's and receipient's addresses in to the appropriate boxes and arrange the location and size of both boxes?

[oldetimer]

I think all the details are in the original question. Clicking on the various links provided on the envelope file did not help at all. Thank you.

[WmRobt]

all of that is very good I’m sure, but where do I go from here?