In Synergy, how can I configure a client monitor with a server monitor on either side?

I have a monitor setup where two monitors are on my Windows 10 box (server) and one monitor is used for my Mac (client). It looks like this:

+------+                   +------+
|      | +---------------+ |      |
|      | |               | |      |
| pc 1 | |      mac      | | pc 2 |
|      | |               | |      |
|      | |               | |      |
|      | |               | |      |
|      | +---------------+ |      |
+------+                   +------+

When I mouse across to the left, it goes:
Mac (leftmost) --> pc 1 --> pc 2

And the opposite to the right.

What I would like is to have the mac monitor logically in between pc 1 and pc 2. So moving the mouse all the way to the left would be pc 1, moving right would be mac, and then all the way on the right would be pc 2.

But since both of the monitors are hooked up to the same system, I can't separate them in the config.

Is there any way to do that?

Thanks!