VWorks User Guide : Setting parameters for scheduling tasks : Group Begin and Group End

Group Begin and Group End
Description
The Group Begin () and Group End () tasks are used together to:
Note: If the tasks are not grouped, the software will determine the fastest task sequence based on available resources.
During the protocol run, the software will make sure the labware needed by the grouped tasks are on the device locations before running the first task in the group. In addition, while the grouped tasks are running, only the microplates required by the grouped tasks will be allowed to be moved onto, off of, or within the device.
Use the Group Begin and Group End tasks if you want to control the sequence of liquid-handling tasks to make sure each microplate is handled the same way in the same sequence.
Note: To further control the tasks, especially those with time limits, you can specify time constraints between dependent tasks. See Specifying time constraints between dependent tasks.
 
Main Protocol, Bravo Subprocess
Main Protocol, Vertical Pipetting Station Subprocess
Requirements
You cannot add a Change Instance task within the grouped tasks.
Task parameters
The Group Begin and Group End tasks do not have task parameters.
Example: Group liquid-handling tasks
Goal
Make sure all liquid-handling tasks are finished before incubation begins.
Implementation
Add the Group Begin and Group End tasks around the liquid-handling tasks. Notice that the Change Instance task is not within the group.
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