A method to do this is in the dxdesigner_user help manual, see dxdesigner_user.pdf or hyperlynk to:
As a EE, I know the reasons behind tieing GND to together AGND and why you want to show two nets on the schematic. The tool problem is three fold. How do you show it on the schematic, what does it look like in layout, what is the board vendor going to see. If you tie them in the schematic and fool the system, does the netlist have one net or two. In Layout do you pour an AGND and a GND and then fool the system to tie them together or are they one net? When the Vendor or Valor does a shorts test and finds these are shorted, what documentation do you provide to tell them this is correct.
Every customer has a little different siuation, just be sure the outcome is what you expected. Personally having worked on things that switch 2000+ Amps, run fiber optics everywhere and let each system have it's own GND:^)
Check my response in this thread:
It is generally the same subject.
Using a parametric RF shape, you do get a symbol in schematic (and you can edit this to look just the way you like) -but its still not a part -at least not a normal packaged or assembled part: Its just metal bridging multiple nets in a controlled fashion without DRC issues and with the manufacturing data still OK. (and it won't show in the BOM)
You do need the RF license though.
I should add that the example in the other thread uses a piece of custom drawn metal to bridge many nets (star point) but it can be a lot easier if its just 2, 3 or 4 nets to bridge as we already have such elements in the library ready to use.
The size of these in layout are parameter controlled (L for length and W for width)
it seems as if I can't open your hyperlink