Here you can see two grouped panels, the one on the left is a set of controls used for entering proxies for testing and the panel on the right shows a list of proxies that have been added or harvested that are awaiting checking.
The big text box here can be used for entering proxies that you want to check, you can enter in proxies that do not require a username and password or proxies that do require a login. Each proxy should be entered in on its own line with no extra information other than the necessary information needed to use that proxy, see the correct formats below:
Address:Port
Address:Port:User:Pass
To add these proxies to the list of proxies waiting to be checked simply click the "Add" button.
This is purely a list of proxies that are waiting to be checked. Removing proxies from this list will not actually remove them from the internal list, it is just for viewing.