Click on Execute. In the Execution Plan tab, select 'Custom_R12_Financials' which is the execution plan that just created for Financials
Check the "Full Load Always" and "Drop/Create Indexes" box. Click Save
Click the "Run Now" button
Click the "Current Run" tab to monitor the process
Click Auto Refresh to choose the automatic refresh frequency
Navigate to Run History tab, click on the "Run Status" to check the status. It should return with the status 'Completed'