This illustration shows the process editor of the Travel Request Process.

On the left are the two swimlanes, Employee and Manager, listed top to bottom.

The Employee swimlane has the following elements from left to right: Submit Travel Request start event. 

The Manager swimlane has the following elements from left to right: User task (an Approve human task) and the Travel Request Complete event.

There is a sequence flow from the Submit Travel Request event to the Travel Request Complete event.

On the right is the Elements Palette which shows the following options: 
Human 
System
Events

The Human element is expanded and the following options are displayed:
Submit 
Approve

The following items are bordered in red to call attention to them:
User task in the Manager swimlane
Approve in the Elements Palette