app/overrides/add_store_to_spree_stock_locations.rb
Deface::Override.new(
virtual_path: 'spree/admin/stock_locations/_form',
name: 'add_store_to_spree_stock_locations',
insert_bottom: "[data-hook='admin_stock_locations_form_fields']",
text: %q{
<div class='form-group'>
<%= f.label :store, Spree.t(:store) + ':' %>
<%= f.check_box :store %>
</div>
}
)