On the Network Settings page, the “DHCP Start” is pretty self-explanitory but does “DHCP Limit” mean the 1) maximum number of DHCP leases that will be allowed (e.g. DHCP Start = 180, DHCP Limit = 10, Last possible DHCP lease is 189 (inclusive)) or does it mean 2) the RANGE of DHCP leases (e.g. DHCP Start = 100, DHCP Limit = 150, Maximum number of DHCP leases allowed = 51 (inclusive) from 100 to 150).
You don’t need to keep static lease out of the range. In fact, the easiest way to assign a static IP is to set a host name from the Status page, which assigns the host’s current dynamic IP as its static IP.