2Captcha is used to get your captchas completed. To start using it with GaneshBot GUI, you will need to grab your API key from the 2Captcha dashboard.
Click the Copy button next to your API key, and head over to the Settings tab in GaneshBot GUI.
Input your key in the 2Captcha Key field by pasting it. To make sure it was successfully added, you can now click the Test button and GaneshBot should display a notification stating your 2Captcha balance.