The Join Project wizard suggests the following names:
Each view and stream must have a unique, descriptive name. (Each name must be unique within a network region.) Give the same name to a development stream and its associated development view.
Choose a name that helps you determine at a glance the owner and purpose of the view or stream. Names like myview or work are too generic and, if you work with more than one work area, can lead to confusion.
In any case, a name must follow the format of a single file or directory name with no special characters or spaces.