EDITING CHECKOUT PAGE/S

Hello,
I’m keen to change the layout of my checkout. Shortcode is [woocommerce_checkout] placed into the Checkout “page” created.
Can you advise if Basel has ways to edit the checkout or is it more in depth coding?
I can’t see settings in Woocommerce or Basel theme. I’m sure I did see some before.
I’ve also seen this plugin. https://wordpress.org/plugins/woocommerce-checkout-manager/

If you can help. Thanks.