Saloniture Premium Locking Rolling Trolley Cart with Pocket Inserts - Black

Are the drawers adjustable? It's hard to tell by looking at the picture!!!

Is it wood or plastic?

Can I attach the rod slot attachment to the right side of the cart where the rod rest attachment is shown under the dryer rest (reverse of picture)?

Looking to get my daughter as a gift, she's a new cosmotologist - will the drawers attach to the top of the tray while working?