Im running out of IP Address available

Hi,

I searched on the community but didnt find anything really useful.

I'm running out of IP addresses available on my DHCP. Can someone help me on out to add a new range and make sure that when the first pool is full it will go on the new pool automatically. Also  that all my new IP will have access to the network shares.

Thanks

P.S if you need more info dont hesitate.