Instructions:
Step 1: In the Safari app, choose Safari > Preferences, then click Advanced.
Step 2: Click Change Settings (next to Proxies) to open the Network panel of System Preferences.
Step 3: Change the proxy settings under Web Proxy Server.
e.g. 123.xx.xx.xx : 8800
Step 4: Click “OK”, then apply.
Step 5: Our proxies work through IP authentication. Username/password is no longer necessary.
Step 6: Visit an IP checker site to confirm that the proxies are working.