Just drag the guests from one plan to the other:
|1.||Start 2 instances of PerfectTablePlan.|
|2.||Select the guests you want to copy from the Guests or Groups pane of the first instance of PerfectTablePlan (Ctrl+A to select all).|
|3.||Drag the guests/groups to the Guests pane of the second instance of PerfectTablePlan.|
You can also export the guest data to a .csv file and re-import it, but drag and drop is easier.
Custom fields are not copied when you drag guests between 2 plans. If you want to preserve custom fields you need to export the guest data to .csv and import.