Date Range Variables always have a start and end date. This can be a rolling date, calculated when the dashboard is loading, or a fixed date.
The type of period is selected by the range field.
To set a fixed custom period select "Custom" and enter the dates by using the date picker.
The far most used type of period used on financial dashboards are rolling dates. They are calculated relative from the current date and described as e.g. "-1 Financial Years from now".
There are lots of predefined ranges in the "Ranges" drop-down, but the most flexible is the "Fiscal date" or "Calendar Date".
This tutorial video shows how to create a report with the different date ranges: Custom Date and Rolling Date.
Input fields:
Length of Period: How long should the period be (years/quarters)