What configuration or setup to the network is needed to add squid for content filter

Our network is setup as the below

ISP (Huawei AR2200 Router) then Cisco switch(2960) then desktops and one server is connected(win server 2019) ; .

I want to add squid(or other if you recommend) to the server for content filtering .

Do we need to change the current network setup like should all network flow through the server(win2019) in order to filter content?