When you purchase proxies you will receive something like this: 

   5.16.232.215:2048:7f4840c391:539q1223d0e3 (CZ)
   7.16.2.235:2048:7f4840c391:539q1223d0e3 (FR)
   55.16.2.265:2048:7f4840c391:539q1223d0e3 (IT)

The country field is only informative, it will not be required to setup the proxy

• IP: 5.16.232.215
• port: 2048
• user: 7f4840c391
• pass: 539q1223d0e3 

All you have to do is add them to OSBot like this