help needed with displayed input fields being dependant upon category please

Hi all,

I want to create a table that will cater for different types of business, each business type will require different types of information to be added so what I want to do is have an initial input form  in the control panel which loads with a category selection as the first option, then as that category is selected I want to to then load the fields that are relevant to that particular category for the user to complete. Or to put it another way if a certain business category requires additional information then show those fields only when that category is selected.

I know this can be achieved when creating a standard web forms so assume it is possible within cmsb.

Any help with ascertaining a|) if it is possible and b) the simplest way to achieve it would be hugely appreciated.

Thanks in advance for any help provided.