Choose the first one I_CACYCLE and press Process and then Edit Account Schedule. As you can see in each of the first 4 rows in the Totaling column the G/L accounts are defined.
Change the Totaling field based on your G/L accounts. The rows are total revenue, total receivables, total payables and total inventory.
If you want to check the report press Process and then Overview, the account schedule will run and show the actual amounts from the G/L accounts.
Edit the rest of the account schedules in the same way.
For the Cash Flow forecast chart you will need run the assisted setup to set it up.