Adding page to checkout process

WooCommerce doesn’t have a multi step checkout available in core. It’s been discussed and is in the roadmap. Here’s a discussion of the topic.

Without this available in core you’re left to buying a multi step checkout plugin or custom coding it. I’ve seen some plugins like this in the wild bolted into themes, but the code is sketchy.

You could possible redirect the Cart page to a page with the indemnity agreement, then link that page to the Checkout page.

Cart > Indemnity Agreement > Checkout.

You could redirect the customer when they press the “Proceed to Checkout” button by adding a filter to ‘woocommerce_get_checkout_url’. That is shown here:
https://github.com/woothemes/woocommerce/blob/master/includes/class-wc-cart.php#L605

Here’s a reference on actions and filters: https://docs.woothemes.com/document/introduction-to-hooks-actions-and-filters/

If you read to the end of that thread you’ll see someone did some analysis of the themes with multistep checkout and started building a plugin:
https://github.com/ginsterbusch/woocommerce-multistep-checkout

Thanks for the info Daniel, that was vey helpful.

You’re welcome!