Customizing Network Shapes
In a network diagram of any complexity, you’ll probably find that you need to move text around or revise a shape to represent a unique device. Most of the network shapes are actually groups, which means they might not always work the way you expect them to.
The sections that follow describe common editing techniques that work for network shapes. In addition, you can add titles to the page using the shapes from the Borders And Titles stencil.
For details about shape labels, see "Using Visio Shapes to Display Text".
Editing Label Text
To change the text that appears in a label, you can select the shape, and then type. In past versions of Visio some network shapes didn’t work that way, but now all Visio network shapes do. ...