Thanks so much for your response!

I don't really understand what you mean. Your second sentence "So, it
creates primary pumps which push through the chiller, plus secondary pumps
which pump through the system.", isn't that what I'm after for a classic
primary with chillers and dedicated pumps / decoupled secondary with pumps?

My first set up with the Wizard is immediately below. It only shows one
loop. I really question the validity of what the Wizard is doing.

So, I went into the detailed mode and created another circulation loop and
set it up the way I think it should be, but if that is right, then the 100's
of Wizard set ups by modelers everywhere are messed up, and I doubt that????
See the tree from the detailed set up I did in the second image below. The
problem with that one is I can't get the one coil load to get off the
primary loop and I don't trust it, if it is so different than what the
Wizard sets up.

DETAILED SETUP CREATING A SECONDARY CIRCULATION LOOP.

Now chillers are assigned to the primary loop, the secondary loop assigned
to primary loop and loads are assigned to secondary loop (except when I
assign the DDS(B) load to the secondary, it looks OK in the tree, but the
schematic looses the secondary loop altogether??).

Karl Stum, PE