The guides should give you all the information you need for setting up manager.
You may have to jump between the new guides ( a work in progress ) and the old guides for some things.
Any balance in Suspense signals a problem. Never attempt to clear the Suspense account with a journal entry. That only hides problems and usually makes both your Balance Sheet and Profit and Loss Statement inaccurate. Problems that caused transactions to post to Suspensemust be identified and corrected.