Configuring snapshot pro offsite GoogleDrive backup with authorized destination

I need to configure offsite backups using the Google Drive destination that I have had authorized. The first backup ran last night, but used local server storage; even though the backup job is set to use the Google Drive destination.
Can you help me to configure the settings properly? Is there a way to verify the authorized destination works with my settings for a particular snapshot, prior to the run time? In other words, can I test the write to the destination when setting up the snapshot backup job?