You can add alias to the name table from the Project Explorer dock window or tab views.

• Add from the Project Explorer dock window
  Select a node and the Add to Name Table... command from the context menu with a right click, then make alias and set color in the opened dialog.
  
  
  
  
• Add from tab views
  You can make alias in all tab views except the Summary view, Protocols view and Graph view. Highlight a row and right click, select the Add to Name Table command and a type from the context menu, in the opened dialog give a new name to the selected item, you may also alter its color. Once you click OK to save the settings all the packets matching to your selection will be showed with the new name and color.
  
  One packet may involve multiple aliases because you can alter the name for physical addresses, IP addresses and ports,  e.g. office1 for source IP and office2 for destination IP.