You can access this dialog from the following:

Ribbon: OpenRail Modeling > Rail Topology

The Mirror Edges tool will change locations of, for example, two siding tracks. The order of the siding tracks will be maintained.

First siding track is designed through the turnout branches.

By mirroring the Edge, following layout can be achieved. The order of the siding track 1 and 2 is maintained.

Workflow

Open the Schematic View and select Mirror Edges tool.

Select the siding track's first and second turnout.