To add Hornet full/quick check-lists into DCS Hornet. Start by creating kneeboard folder into ../Saved Games/DCS/ folder.
Create checklist by making an images of .png or .jpg type. Make them e.g. 750 x 1169 size (width x length).
And photos to created kneeboard folder:
Start DCS and in Hornet, open kneeboard with RShift + K and look for pages with [ ] buttons (å and ¨ in finnish keyboard):