Say for example I have a "Documents Submitted" picklist with a value of "Yes, Lacking Documents" if I pick "yes" then the picklist field will be disabled and if I pick "Lacking Documents" still it will be enabled. To sum it up, if i pick "yes" the field will be disabled. i've read throught it out and found that i will be using custom function. I just want to ask if its possible before upgrading. 

Thank you,

Carlo