Returns an actions'group using its index or its name from the actions' groups
collection.
Parameters:
iIndex
The index or the name of the actions'group to retrieve from
the collection of actions' groups.
As a numerics, this index is the rank of the actions' group
in the collection.
The index of the first actions' group in the collection is 1, and
the index of the last actions' group is Count.
As a string, it is the name you assigned to the actions' group using
the