Configure multiple proxies in firefox 25.0

[diffie11]

How do I configure multiple proxies in firefox 25.0? Lets say 4 proxies. I know how to set up the proxy servers and how to rotate them but I can't, for the life of me, figure out how to configure multiple proxies in firefox. Sure would appreciate some help. Thanks

 

[COLGeek]

Try this: https://addons.mozilla.org/en-us/firefox/addon/proxy-selector/

 

[diffie11]

Thank you, I'll give it a try.