Bill wrote in :

A good mechanism for presets might especially make sense if the desk
were shared. Growing up, we had one desk in the house, and it was
shared. Not adjustable though. Do you remember telephone books at the
kitchen table? : )

"Do you remember telephone books?" is a fair question now.
Not so long ago the white pages here was 4" thick, and the
yellow pages was two books, each also 4" thick. Now the
white pages are gone, and the yellow pages is one book, only
1" thick.

John