I have custom role
Staff for my WooCommerce shop,
When a Customer create an Order, the Order is assigned a custom meta name
handle_by where the value is a random value of user where role is Staff.
When Staff is login and click
WooCoomerce > Orders, He/She will only see Orders where
handle_by is match current user id.
How to filter WooCommerce > Order to only show Order where the custom meta
handle_by is match with current user login.