Kerio test on vmware, how to do it so as not to harm the main network?

Question

Kerio

Actually, I decided to test the new version of Kerio on the main PC, the combat network 192.168.0.x with Kerio.
I want to try to run Kerio on vmware, tell me the correct vmware configuration (network, host) so as not to harm the main network.
As an option, I’m considering the possibility to make 2 OS on a virtual machine, the 1st will be Kerio, the 2nd will be Win10 (like it should work from Kerio in terms of the Internet), so that I can configure the rules and test on the 2nd machine, again the second the machine has to go to the Internet as well as Kerio.