Rules - Conditionally showing a hidden field within a hidden field

Rules - Conditionally showing a hidden field within a hidden field

So I have an entire section of my form that is irrelevant unless a selection is made. If the selection is made, 3 fields are always displayed, and either a 4th or 5th field will be displayed based on an input from the previous 3 fields.

Except Zoho's clunky software won't allow me to do this! Even using advanced rules. I keep getting a message: "You're allowed to use only one type of action (Show or Hide) for a field in any rule". I wonder if Zoho realizes how dumb it is to impose this restriction when using advanced rules?

What other way is there to do what I want to do other than explicitly stating when I want these fields hidden and when I want them visible?