Hi Bob,
This works for A4 paper, Portrait.
Leave your Images and Descriptions table as it is.
Drag to select all parts of the letter on Page 1.
Menu > Edit >Cut.
Insert a new sheet and delete the default table. Paste. That is now your letter and it will print on its own page.
Move the new sheet to first position in the Sheets Bar (drag the Sheet Tab to the left). It will then print first.
Go to the original sheet (Stretcher Quote).
Turn on Alignment Guides in Menu > Numbers > Preferences > Rulers.
Drag the table up to the top and left margins of that sheet (the Alignment Guides will appear when the table fits the margins).
Menu > File >Print...
In the Print Setup panel on the right, choose Print : All Sheets.
Drag the Print Setup panel up to see Page Margins.
Set the Bottom Margin to 4.9 cm (it applies only to that Sheet, not the letter).
Click on the Print... button.
Scroll through the pages to check.
Click on the PDF button and choose Open PDF in Preview (check again before you waste 19 pieces of A4 paper 😉).
Regards,
Ian.
P.S. In Print Setup, leave Content Scale at 55% for the Stretcher Quote sheet.