You can add a new stream to Dimensions CM directly from Visual Studio.
To create a new stream:
Select View | Serena Explorer to open the Serena Explorer.
Right-click the root node in the Serena Explorer and select New Stream. The New Stream wizard appears.
Complete the first page of the New Stream wizard as follows:
From the Create New Stream in Product list, choose the product that will contain the new stream.
Enter a name in the Stream Name field.
Provide a description of the stream in the Description field.
If you will use the stream to store a named branch and want all field revisions to include the branch name, enter the branch name in the Unique Branch Name field.
Choose whether to add the new stream to your favorites list in the Serena Explorer.
Click Next and complete the Additional Details screen as follows:
Under Based On, choose whether to create an empty stream, or base the new stream off of an existing stream or baseline. If you choose to base it on a stream or baseline, select the stream or baseline.
If you want to require requests to be associated with all changes to files in the stream, select the Valid request must be specified when delivering changes option.
Review your choices on the Summary screen, and click Finish to create the stream.