What to select during setup
If you're starting your forecast at the beginning of the fiscal year - leave this field blank beginning of the year you will want to forecast the entire twelve months of the first projected year. As the books are closed each month you can load actual results to increase the accuracy of your forward looking analysis, but for now leave this field blank
If you are staring your analysis mid year - select the last month you have finalized accounting results for in the "Actuals" drop down. For instance lets say your building your budget in the beginning of May, and have finalized accounting results for April and want to load this partial year into PlanGuru, you should select "April" from the drop down box.
For more information on actual results see this knowledge base post http://planguru.zendesk.com/entries/20643896-working-with-actual-results