How can I capture details of a Mondial Relay pickup point during Shopify checkout?

[Yepa]

Hello,
My client has recently installed Shopify Shipping with Mondial Relay
https://help.shopify.com/en/manual/shipping/shopify-shipping/shipping-carriers/mondial-relay
It means that the user will be able to select a delivery pickup point before payment, till now he was selecting it post-payment with the Mondial Relay app.
As a developer I would like to capture the details (address, ID, name..) of this mondial relay pickup point during or after the checkout (webhooks, API, etc) 
Could you help?
Regards
S.

[ThibaultB]

Hi,

I'm also interested in that, somebody knows how to get these infos ?

Thanks