WARNING: If you want to use Tor for anonymity reasons you should install the Tor Browser Bundle for security reasons. The setup described below should only be used for non-sensitive traffic. For instance, this setup is convenient to be able to resolve .onion address without the need for the Tor Browser Bundle.
Check the radio button “Manual proxy configuration” and enter the “127.0.0.1” as SOCKS host and “5083” as port. Also make sure to activate “Remote DNS” so that .onion domains can be resolved. Click on OK to accept the settings and leave the options.