Field with Value list or edit according to another field
I looked online and I keep struggling on this since a day.
I have 2 checkbox fields called customer and vendor.
A third field called author is dependant of those checkbox, if customer is checked I would like that author display a value list with the name of the customers (no other values except the value list is accepted). It's not a big deal I know how to do it, now if customer is unchecked and vendor checked, I would like the author field not to display anything but just wait for a classic edit entry.
I wish I managed to inform you about my problem,
any help or idead would be appreciated,