I don't have Poser Pro 2010, but assume it works the same way as in P6. A Walk Path is a prop and you can change the position and orientation of a Walk Path via its Parameters Palette just like you would for any other prop.

There are two ways you can do it.

1). Create three walk paths. Translate each path so that they each have a different starting point, and yRotate each so that each has a different orientation. Run the Walk Designer, assign figure 1 to path 1 and apply the walk cycle. Then  assign figure 2 to path 2 and apply the walk cycle. Then assign figure 3 to path 3 and apply the walk cycle.

2). Or create one walk path, assign figure 1 to the path and create the walk cycle for that figure. Then move the path, assign figure 2 to that path and create the walk cycle for that figure. Repeat the steps for any subsequent figures.