Show name label for specific Gather, Select or Route function

Hi all,
While describing diagram content in the scope of a document, one can use the name of the function for identification. However if a representation shows multiple flow functions of one type (for instance of type Gather), it becomes hard to link which function belongs to each description since diagrams don’t show the name of the flow functions. While most of the time the representation without name is fine, in this case I would like to selectively display the name of some flow functions in a diagram. Is that possible? I looked through styling properties but could not find a property which would allow that.
Thanks in advance.