On the Routing tab in the Step Properties, specify whether the work follows a single route, or if the work can split to two or more routes that can process simultaneously.
To specify outgoing routing for the step
In the list of routes from this step, specify the order that the routes should be evaluated at runtime. (Use the up and down arrows as necessary.) To see any conditions specified for a route, select the route and click Details.
This creates an AND-split; you must specify a corresponding AND-join for a subsequent step. See Specify incoming routing for information about creating a collector step (AND-join).
For further information, see About routing and Outgoing routing examples.