How can have list of pickup locations when someone choose local pickup in checkout – WooCommerce

I am doing a website using wordpress, woocommerce and Elementor and I need a help in it.

There are two options for delivery, Home Delivery and Local Pickup and for local pickup, there are multi location. I want to show that list in popup or at least dropdown and asking person to choose one pickup location when they choose local pickup. I don’t want any map or anything like this. I just want the list of locations where people can choose.

I tried using booster for woocommerce and added one custom dropdown field but it is in billing field. But I want it appear only when person click on Local Pickup and appear just next to localpick as dropdown list or popup so that people can choose one location.