Start by setting up the rows in your table, either by using a row template or by creating them yourself. When you create the columns, regardless of what Interval and Resolution you have, the budget and forecast data is retrieved from the "Column formula".
In the same list, you can also choose between different budget differences or forecasts, depending on the data you want to obtain, including Forecast.
When you have selected the data you want to extract, click on "Apply". The data should then appear in the rows you have selected.