I have a card where the endpoint is results-oriented, not time oriented. That is, we'll stop when some criterion is reached and we don't know how long that will take. I want someone to work on it Monday, Tuesday, Friday (for example), and work on something else Wednesday and Thursday. I'd like to see this reflected in the timeline (or calendar) view. How do I do this? I see I can make copies of a card and give them a bunch of different start end dates, but this is tedious and makes the board view unwieldy as there's a million copies of effectively the same card. How should I be doing this?