I have two drop-down lists. One includes a list of particular locations within an organisation, the other includes a list of other different type of locations. What I want is if the user chooses from the first dropdown they can't choose from the second list. I also want them to be able to delete their first choice if they change their mind and be able to choose from the second list ... and vice-versa if you know what I mean.
Is this possible?
Thanks for your help.