Choose a banner.
Set the size. Print both sides.

Craft sequence: print at 100% · measure the 50 mm line · cut the outer silhouette · fold on the dashed pole gutter · glue front to reverse. Disable Fit to Page / Scale to Fit.

Fold & glue — A4 — plain paper first: 1. Use ordinary A4 paper. 2. Print at 100%. 3. Disable Fit to Page. 4. Disable Scale to Fit. 5. Use Fold & glue, not Duplex. 6. Measure the 50 mm calibration line before cutting. 7. Measure the 10 mm and 28 mm samples in the on-screen legend. 8. Cut representative banners. 9. Fold around a suitable pole or wire. 10. Check front/reverse alignment.

Plain paper first: 1. Select the paper size above. 2. Print at 100%. 3. Disable Fit to Page / Scale to Fit. 4. Enable Two-sided. 5. Select Flip on long edge. 6. Do not use booklet mode. 7. Measure the 50 mm line. 8. Hold the sheet to a window/light. 9. Check the four registration marks. 10. Cut one sample and confirm front/reverse alignment. Record any horizontal or vertical offset before trying cardstock.