Don’t know if this answers your question. But you can create a plan by clicking on the book symbol. With New → Plan, it opens a new calendar view, and you can either drag and drop workouts from your library, or create it by clicking on a day.
If you have planned for example 1 week, you can then drag and drop that plan to any week in the calendar view from your library.
If you want to do for example your Run on another day, just drag and drop to that day
If you want to add another workout, drag and drop it from your library.
So it’s quite flexible. But of course there is no automatic way to do that, like “if the weather is bad, switch this workout with that” and so on.