will connected users be affected if I increase DHCP range?

Hey all,

I have FortiGate 80E firewall (v7.0.7 build0367) with DHCP range 192.168.9.100-192.168.8.250

I'd like to add 25 slots to that range by increasing the starting range from 192.168.9.100 to 192.168.9.75).

My question: Can I make this DHCP change in real time? Or will it affect DHCP users, static IP users, VPN users, and my access to the local FortiGate portal?