I'm not sure if an IF rule is the right way to do this. I am creating a
Directory Merge, a list of names/addresses/phones/email. Some people have
more than one phone (e.g., home and cell). I would like the phones to be on
the same line, formatted as follows:

505-555-5555 / 505-555-6666

I right clicked the merge field for the second phone number shown above and
chose Edit Field. I selected the "Text to be inserted after:" check box and
entered space / space (where "space" is an actual space, not the word space).
This works great as long as there is always a value in the first phone number
field (I thought there would be but I have some records where there is only a
cell, the second phone number field, and no home phone, the first phone
number field). So instead of looking like the above example, I get this in
that case:

/ 505-555-6666

I think I need to add the spaces and slash after the first phone number
field, but I only want those characters to be used when the second phone
number field is not blank. Is that right? If so, can someone help me with
formatting the IF rule?

PART 2: What is the difference with inserting rules using the Rules
drop-down in the Ribbon versus right clicking a merge field and choosing Edit
Field? When should I use one over the other - or does it matter?

Thanks!