Where do I put my terms and conditions?

Hi,

Where do I put my terms of service for the product I’m selling - on my membership options page or do I have to integrate it into the PayPal checkout page?

1: If the latter, can anyone provide links to the relevant documentation for doing this?

(Similarly, is there anything else I need to set up on the checkout page?)

2: If the former, is it somehow possible to insert conditional checkboxes so that there is no way the user could subscribe without explicitly expressing their consent?

Thanks.