Update ecommerce for GA4 with GTM in Prestashop

I already installed GA4 and configured (add to cart ) in our prestashop via GTM but for the ecommerce part I having diffinculties finding the checkout pages and some other details.

I would need the configuration of the sales phunel and the next accions
search
view_item
view_cart
remove_from_cart
begin_checkout
login
sign_up
add_payment_info
add_shipping_info
purchase
refund

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