Hide Column based on value in Row

[austin13]

So I'm building a signup app which is fairly simple.

I'm having users signup on food items, but some items need only 2 people, but some items need 4 signups.  How can I hide columns for those items that only need to 2 signups.

example:
The spreadsheet has

Food Item, Signup 1, Signup 2, Signup 3, Signup 4, Signup 5

I Only want to show Signup 1 and Signup 2 for food item 1 but hide Signup 3-5.

Hope this makes sense.