number of lookups depending on another dropbox

number of lookups depending on another dropbox

I have a max number of students in a class, and it all depends on how it is set by the tutor.

The number can range from 1 - 10, however, because if the number is only 4, then i want only 4 lookups to be added(or enabled, if not possible to make the rest disappear)

The lookups are used to look for student names and add it to the class.

Thanks for the time!