Give your terms and conditions the attention they deserve by encouraging customers to read them (or clicking through to your external T&Cs page), and confirming they've done so, at the webshop checkout page.
How to add the T&Cs tick box
Head over to Customise > Legal stuff
Click 'On' to the 'Request purchaser agrees to Terms and Conditions on checkout?' prompt
A 'Terms agreement copy' box will then appear for you to enter the wording you'd like to have show on the webshop checkout
Press save (the green button on top right of the page)
Where the tick box is located
Once saved, the T&C tick box will be live on your webshop for customers to tick before making their purchase. You can find this on the final billing page of the checkout journey.
If you have added a terms and conditions link (also on the Customise >Legal Stuff page) this will appear below the tick box with a link to your external T&Cs page. The default wording with this link is "View Terms and Conditions".
If a customer does not tick the T&C agreement box they can't proceed to pay for their order; the 'Pay £XX' button will remain faded out and will be unclickable.
What to include on your T&Cs
This is really up to you (or your legal advisors), however we do have a useful article that gives you some helpful tips to get you started!