When you are in the page for a goal, you can click either the due date or the amount needed to get them to switch to alternate forms - for the amount due, it either shows “+X” or “Y total.”
On the dashboard, clicking the due date changes just like on the goal page. However, on some of my goals (for example, my exercise goal) clicking the “+X” does not change it to “Y total.” It does work properly on some other goals (for example, my reading goal). What’s more, hovering over the “+X” on any of them does show a mouse pointer that looks like it can be changed.