Pre-Sales question – WooCommerce Boost Sales

Hello!

I am looking for cross-sell functionality to add in the checkout. I have variable products- watch straps ( variations for 1.color and 2.size) I would like to add as cross sells.

1. Is it possible to show cross sell slider in the checkout, but not as a popup? For example, with a shortcode or function?
2. How will the variations be displayed in the slider? Will there be two dropdowns for each of the variation (what is the frontend design for this)?

Looking forward to learning more about your plugin!