How to change/create icons on the menu bar?

Hi, i am new here and i am glad to see so many features of niotron.
BUT , even i am a C# coder some are quite unintuitive for me.

first problem: i need an simple bottom bar with 4 custom icons.
i canot see where to change or to add new custom or sistem icons or buttons in the bottom bar. to open various screens app.
i rather understand the programming block…:slight_smile: as a c# coder.

All the best wishes

Start a new app and choose bottom nav activity .

dont waste you time for this problem…
no one goona reply or fix this

im also searching the solution for this from last 3 months