magento2.2.6 – Magento 2 – How to change the shipping information in one page, at the payment stage

I have created a shipping method for in-store picking. That works well. But I have to change the shipping information (address.e.) As a store address, but this should not affect the data of the customer_address table.

What I exactly need is to change the address before submitting the shipping address, step by step, in payment step.
In the picture below, the shipping information must contain the address of the store
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I work in version 2.26 of magento.

Thank you