Configuring Sophos XG136 Firewall port for connecting switches.

We have 40 Srvers and we want all the users to connect the servers through XG-136. We have 40 Switches out of  which 4 are connected to servers. All of these switches which are connected to servers I want to connect them to North End of the Firewall and our L3 will be connected to south end of the Fitewall. Servers IP addresses are whereas Switches have as their Managemen IP.s. Users are devided into 4 VLANs.,,, respectively 

Kindly advice how to configure Firewall ports for switches which are connected to servers.

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[edited by: emmosophos at 8:18 PM (GMT -7) on 13 Oct 2021]