Pickup-location in checkout

hy, so i just want to confirm that in shopify checkout i want to show my own pickup locations the pickup location is coming from an external api to show i create an extension and in pickup by using useDeliveryGroup method i show my own input field for zip code and button when someone enter zip code and press button so than the pickup locations show ok and he can then complete order and that location i pass to order attributes and that show in order page but issue i am facing is that when i click on pickup than in pickup there also show a pickup location which is coming from admin site where i create a store there if i disabled there than pickup option not show in pickup if i pickup location not show there than i cannot able to show my input field and button on pickup so whats the solution because when complete order than my own pickup location there show in order page but also another location going which is location that is default pickup coming from admin site so should i change my approach or any solution with approach i am working