1. When printing, select the paper you need, as long as your printer can output. For example, if you choose A3 (A4 in your picture) as the standard drawing, it will be automatically reduced or enlarged to A3 when printing.
2. When printing, select the paper you need, select the window graphic (the one in your picture) to output graphics, and then click Preview to display your drawing interface. Use the mouse box to select the graphic to be printed, and it will be OK.
In fact, the size of these two methods is related to the paper of the printer.