How to change DHCP server

Hi,

Current DHCP svr (10.10.232.66), I have installed a new DHCP svr (10.10.232.71)

I don't want to turn off current server and run both in parallel in order to make sure new svr work properly.

So can I force some client to get IP from new svr ?? current svr assign 10.10.232.2-99 / new svr assign 10.10.100-200

If test completed, I will use new svr to replace whole DHCP service on current svr.

Thanks