The setup creates an army of agents. There are two paths created. Middle part of the army starts moving and then splits into two formations. One goes to the left, the other groups keeps marching forward and slowly changes formation to a wedge shape.

To keep the agents in formation a custom geo shape is used. It’s points are used as goals for indiviudal agents. Using blendshapes the shape can change allowing for different formation changes. Dive inside the crowdsource object to see the construction.