how do I create multiple according drop-down boxes

How do I create a multiple accordian drop brown boxes for items with relevant notes added

Thanks Greg

I like your term cascade and May help you understand my question
I am not good at understanding computer language

The purpose is to developer a process where I can developer our business reports from a phone

I assume your drop-down (couldn’t interpret “brown”) boxes appear due to a >Data>Validity setting for a related cell.
What do you mean by “according”? Shall a second or a third (…) set of selectable values depend on one or more previously selected items?
If so, you should notice that the ‘Cell range’ mode accepts a formula-like expression in place of an ordinary range. Using OFFSET() or INDIRECT() or picking single rows/columns from a rectangular range by omitting one of the index parameters of a call to INDEX() you can make the ‘Validity range’ depend on the contents of different cells.
Please dont’ use the ‘Add Answer’ for giving additional information, but edit yout question instead.

Sorry suppose to be accordian

Well, since I couldn’t find any mention of the word “accordian”, I guessed it was a typo, and meant to mean “according”. This still makes some sense to me.
I’m missing, however, your answer on my question in return “Shall a second or a third (…) set of selectable values depend on one or more previously selected items?”
In earlier cases I used the term “cascaded validity settings” for what I meant.
Anyway you didn’t comment on my answer containing an attachment (based on the guess). Did it help in any way? There also were hints directing to a supposed answer in my comment above.

Since you, @greguebe, didn’t comment on the example attached to my answer, I don’t know if it helped you sufficiently to solve your problem or if you need additional explanation.

You may glance at this answer on a assumably related question in a different and better structured forum.