In fact the main assets of the desks are that:
1-It is adaptable quickly and easily while remaining stable. No need to do a balancing act with the guitar in one hand and the console that is trying to adapt / collapse / mount / etc on the other.
2-The media is totally flat. This allows to write the partition without having to remove it from the desk to put it on the back of his guitar and finally rest on the stand.
In short, this panel is not only sturdy, stable, practical, no emcombrant and easy to store, but mostly it's the accessory that was missing to give my guitar lessons. The flat surface is for many, offering undeniable time savings and improved concurrency with the student / musician / group.
This is what I needed, it is excellent!