Is it possible to have the remote top icons editable? Now they are jumps to Movies, Shows, Music etc. These are not the same as my Kodi entries. For example i don’t use Music and Pictures. I have add-ons like Spotify and Youtube in the Kodi menu.
They are already create custom commands and assign them to those buttons.
Wiki explains how to.
I didn’t know. I will read the Wiki again.
Thanks for the hint.
Will be quiet hard for me i am afraid
There’s really nothing hard 
In all cases to use specific function you need to know them, most are documented on Kodi forums or can be seen from the skin / keymap editor addon.
Entering them in Yatse is the easy part.