Yes but how will you define that inside the static lease?
You can only select the DHCP server to use...!
You don't have to change anything inside the static lease. Simply "make static" and don't bother changing anything in the lease and add the network under DHCP Server->Networks and it will work.
The matching of DHCP networks is like matching of routes, it will use the most specific network that matches the IP being handed out. In this case I have a network for the whole /24 and a network for the single /32 in the /24 and the computer matching the /32 will use the more specific network.
The only reason to add the static lease is to prevent the computer's address from changing. You could simply add the dhcp network for that IP with no-dns configured and it will work for that one computer until the IP happens to change. Then suddenly if some other computer got that address it would start getting no-dns instead.
I do know this works fine - I tested it before posting just to make sure that it did what the OP wanted.