Elgato STREAM DECK MINI Guide De Démarrage Rapide page 4

3
Launch the app to customize Stream Deck Mini. Drag actions from
the right panel and drop them onto your desired keys on the left.
All manuals and user guides at all-guides.com
4
Configure your actions and personalize keys with custom icons –
for best results use 72 x 72 pixels .jpg or .png files.
5