This Custom tab is where you can set the following screen-specific options:
This is where you can type in, or paste in, your license agreement.
This is the text that will appear to the right of the "I Agree" radio button.
This is the text that will appear to the right of the "I Disagree" radio button.
This sets which radio button ("I Agree" or "I Disagree") will be selected by default.