How do I put a comment(help text) on a list box?

[#1]

On a particular list bos I want to tell the users that a particular option is been removed but they still need to cater for it elsewhere. I dont see an option that comes close to this on the peoperties.

[fdelacal · Accepted solution]

SEE imagen i atach to you

[#3]

Thank you Facundo, appreciated