VOIP N2048, dhcp pass through

Hi, we are using Dell N2048P switches to power our mitel IP Phones,

We are looking to configure the following scenario on the switches.

Phone gets dhcp from phone vlan, and then passes through dhcp or another vlan for printers,workstations etc.

Can someone let me know how this can be achieved through the gui preferably, i can also terminal as well.

Thanks