For example, if you want to see Outcome and Budget monthly next to each other, the "Show along with" function is available when you set up a column. This is how you do it:
First, create a set of columns with Interval: Year and Resolution: Month. Then create a new column in the table you want to edit by pressing "Add column".
Configure the column with the desired settings, then select "Show along with" and select the name of the set of columns you want to see the new set paired with. Press OK.
Now the new set of monthly columns is displayed in pairs with the ones that were there before.