Uses of grouping activities are:

Create a set of activities having a common error transition.
Repeat group of activities based on a condition. - Iterate over a list.
- Repeat until condition true.
- Repeat on Error until condition true.

Group activities into a transaction.
To create a critical section area that synchronizes process instances.
A 'Pick First Group' allows you to wait for the occurence of multiple events and proceed along a path following the first event to occur.



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