I don't think I can currently do this... but it's worth asking if it's possible.
My use case is concerning annual leave which is calculated from the beginning of the calendar year (01Jan) then each month I want to have details of leave taken etc...
In the Date Range Filter I could use This Year or Year To Date - but that doesn't help me if I want to look at data that only applies up to the end of August. Likewise Previous 12 Months won't help at the beginning of the year...
Ideally I would like to be able to set :

This could even be tied in with the Fiscal year value in Settings. There is the option to have Starting Month in the Settings > Format but this doesn't seem to solve my issue

I welcome any advise or suggestions
Thanks
Catherine