Execute Together 
Execute Together
Use
You can select various work items and then execute them together. This function is only available for work items of type W.
The work items do not necessarily have to belong to the same workflow.
Prerequisites
The work items must refer to the same single-step task.
For information about other prerequisites for this function, in particular with regard to the underlying method, refer to
Creating an "Execute Together" Method.Features
Only the first of the selected work items is proposed for execution. The entries you make here also apply to the other work items to be executed together.
Activities
Select the work items that you want to execute together. Then choose Execute together via 
Other functions... in the