How can I create a clickable list that will apply one of various formulas to a column?

Solution 1:

use CHOOSE() . From ur :

create dropdown autocompletion

use it to 'drive' its selection. Eg :

A1 : put a value

B1 : type A , B or C

C1 : =CHOOSE(MATCH(B1,{"A","B","C"},0),A1*1,A1*2,A1*3)

Please share if it works/not/understandable.