To add proxies to Jancy you have 2 options.
Adding Proxies in your Profile CSV allows you to directly associate a specific profile with a specific Proxy.
To add a Proxy to a specific profile you must first add a Proxy column to your Profile CSV file. The Proxy information should be formatted like this: <host:port:username:password> or <host:port>
It should be formatted like the following image.

After you have added the Proxy to the desired profile make sure to save the file and to refresh the file in Jancy with the highlighted button in the image below.

After this you have finished adding your Proxies to your profile CSV. Then the next time you select a profile with a added Proxy Jancy will automatically use that proxy.
If you wish to add Proxies through a separate file so that you can use them without having to select a profile use this option.
You can download an example file here.
You can format your new CSV file in any order from the image below.