Limit results to current user only (orders page)

Hi all, I'm desperately trying to tweak woocommerce to to one unusual thing : allow customers (more like partners) to search and delete orders. The website is not about selling stuff, it's a tool for partners to generate quotes for their customers and those partners want some control. My idea was to give them a limited access to the WP backend as the admin orders page would be perfect for them. It's editable and searchable BUT it displays ALL the shop orders and I want to limit the results to only the currently logged user's orders. In the URL I saw that the called post type for this page is "shop_order" and I thought that tweaking with the "class-wc-post-types.php" file would be a good start but I'm no developper. Is there a parameter that I can add to the wc_register_order_type('shop_order' section ? If not any other suggestion ? Thanks in advance