Select Bar Menu > Settings > Accept Differences > Select GPSET then in the dialogue right click on the preferred GPSET and press Select GPSET. There is also an option to create a GPSET here. The currently selected GPSET is indicated in the status bar of this dialogue.
Select Bar Menu > Settings > Accept Differences > Create GPWL then in the dialogue enter a name and select the database in which to create the GPWL.
Select Bar Menu > Settings > Accept Differences > Create GPSET then in the dialogue enter a name and select the GPWL in which to create the GPSET.