Dear mojang

Plz help me. I got a add-on app and a lot of the things I download involve "long pressing" but I dont know how to long press in mcpe so I can never use the add-on.plz help. I give mc 5 stars bc its good in general. If you guys know how to long press(assuming you know)plz answer as soon as possible.

pickleman656 about Minecraft: Pocket Edition, v1.1.5