How to tune QU PAC with fix IP address ?

Hello I have GLD80 and recently I bought QU PAC. When I connect my QU PAC to my first routeur, I can connect but when I go on Utility diagnostics no IP address appearing. When I connect my QU PAC to new small routeur I bought in order to include it into the flight, I can’t connect. I think problem with DHCP. How I can set an fix IP Address to my QU PAC as I cna do with my GDL80 ?

Thanks,

see manual for firmware version 1.7 on page 60

https://www.allen-heath.com/media/Qu-Mixer-Reference-Guide-AP9372_7.pdf