I don't believe you can hide the presiding months at this stage; it appears to show one year of previous data (eg. on month view it shows back to September 2018 - on quarter view it shows back to Jul-Sept 2018).
It should default to Today when loading though - or you can press the "Today" button to get there. You can also limit the timeframe on an export if sharing with others in your organisation.
I think as you move further into your roadmap you'll begin to notice it less as being able to see forwards / backwards will have more benefit the more you use it :)
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