My client has several attributes for each product. Here's my question...
One attribute is: Invitation Printing Options....dropdown with Blank and Custom as their choices.

If they choose blank I don't need anything else to happen. However, if they choose Custom I would then like another attribute to appear with their "custom" choices. Meaning I don't want the attribute to be visible unless the Custom attribute is selected.

I hope that makes sense. Thank you for your help!