The Direction and From other side settings on the Passes tab give you full control over how the facing toolpath should be laid out and in which corner of stock the toolpath should start.
The following images show the resulting toolpaths for each combination of these options.
Climb milling
Climb milling from the other side
Conventional milling
Conventional milling from the other side
Both ways milling
Both ways milling from other side
Note: The passes do not extend completely to one side because the last pass ensures that all stock has been fully removed by the tool.