app/overrides/add_subscribable_checkbox.rb
Deface::Override.new(virtual_path: "spree/admin/variants/_form",
name: "adds_subscribable_to_variant",
insert_bottom: "[data-hook='variants']",
partial: "spree/admin/variants/subscription_fields")
Deface::Override.new(virtual_path: "spree/admin/products/_form",
name: "adds_subscribable_to_product",
insert_bottom: "[data-hook='admin_product_form_right']",
partial: "spree/admin/products/subscription_fields")