IF conditions in fields leaves lines

Hi there,

When I'm using the IF function to determine which fields appear, how do i
make it so a failure to satisfy the condition does not skip a line?

For example, I have the following block at the top

[Company/Individual Member]
c/o [Person]
[Job Title]
[Work Address]
[City], [State] [Zip]

I want to set up the second line as follows

[If Company and Person , then"c/o [Person]", otherwise leave blank]

It has to include both Company and Person as conditions. The problem is if
the conditions aren't satisfied it leaves a blank line (unlike what fields
normally do, which is automatically jump to the next field). I've tried
different combos, but noething seems to be working. Is there a way around
this so there is no blank line? Thanks in advance.
--
Yousef