Capacity leveling CM21 with alternative routings

Hello everyone,

At CM21 screen I want to schedule production order manually. At the top part I have the workcenter which is in the routing of the order but I want to see the work centers which are mentioned for that material at the alternative routings(In my examle I have 5 alternative routing for my material).

How can I list the alternative workcenter at the top of the list so that i can easily schudele the order for empty capacity.

Thanks.