Go to TOOLS-->OPTIONS, and select the environment option.
Click on the FILE LOCATION tab, and under "Archive Location" type in H:\Groupwise Archive\
If you don't have this folder already, it will prompt you to create the folder, just click yes.
This will set the archive location.
Next, go to the CLEANUP tab.
This will let you set the number of days you want to keep messages before archiving.
Set the Mail and Phone message to archive (recommend set to 60 days)
Set the Appointment, Task & Reminder to manual archive
And, finally, set the Empty Trash (recommend set to 30 days)