Setting up TS3 on 2 separate computers to have the same DEF identity and server privileges is simple and straight forward:
The export function is within the TS3 Identities user/default line:
Select your user name
When you right click on the user, the export and import functions become available:
Pick a location easy to remember (I recommend desktop), name the file to be saved to desktop (I recommend using your TS3 DEF user name for ease of identification.)
Copy this file to the pc you desire to import the identity to (again, I recommend placing on your desktop), then open TS3, got to Tools, Identities, right click on default or your user name, and select Import
Select the file you placed on your pc desktop (or other location) and select Open
Now, all you need to do is rename as necessary within the Identities parameters
At this point, your TS3 DEF identity should match exactly what you have on your other pc and you can now use either to access TS3 without any connection/privilege issues with the DEF TS3 server.