[Elecraft] newbie setup questions on memory editor & repeater setup

[Julie Royster]

Hi from KT4JR, wife of K4MWE, and new co-owner of a K3 with 144mHz
transverter built in.
I have not been able to understand how repeaters are supposed to be set up
and I am hoping some kind spirit out there can clarify for me.

I have entered the repeater frequency in the VFO A cell of the memory editor
on the computer.
I have selected FM so that offset and PL tone choices appear next to the VFO
B cell.
I can put in the offset and PL tone, but do I enter a frequency in the VFO B
cell?
I can't tell whether the program would apply the offset to the VFO A
frequency or to the VFO B frequency, so I don't know whether to put the same
entry in A and in B, put the actual transmit frequency in B, leave B blank,
or what.

Say we have a repeater with VFO A frequency at 145.20 mHz and a negative
offset of 0.6 mHz.
So my transmit frequency needs to be 144.60

What should my table row look like?  What goes in the VFO B cell?

Name          VFO A    VFO B    offset    PL tone
ABC club     145.20   _____    -0.6       82.5 

A related question (why I can't figure out the above) is where on the K3 I
could actually see the result.  Is there some way I can display the
frequency I am transmitting on using the display screen of the K3?

Do I need to set the K3 to split before using a repeater, in addition to
setting the above?

If there is a pre-fab dummy guide for repeater set-up, please point me
toward it!

Finally, I have not figured out the squelch yet either.  is there a set-up
guide for squelch?  

Clearly this radio is amazingly flexible, and I need to keep on studying!
THANKS for your help!
Julie KT4JR in Raleigh, NC