Disable column field based on row value product name

Hi, I am new to APPSHEET and creating a basic inventory app. 

I have 3 columns ITEM, PREPPED, and UNPREPARED. How do I disable the PREPPED input filed only for the egg?  Can someone help me with this? Thanks in advance

 

ITEMPREPPEDUNPREPARED
Chicken  
Pizza  
Egg  
Solved Solved
0 2 83
1 ACCEPTED SOLUTION

2 REPLIES 2

Thankyou so much for your help!

Top Labels in this Space