Remove your glasses before adjusting a holder. Slide it along the rod to change its height, keeping enough space between all three holders.
To remove a holder, slide it back off the top of the rod. Remove holders above it first if they block the path. Do not pull a holder sideways off the rod.
Tray: use the storage area for small items and the integrated opening to route a charging cable. Wing: the slimmer base uses the same rod and holder assembly method.