1. Dorico makes it easy to set up a repeat structure where each ending segment is to be played more than once.
  2. With a repeat ending selected, open the Properties panel and enable No. time played, setting the total number of playthroughs.
  3. Then, in Engrave mode, select each repeat ending segment in turn and use the Times played for segment property to specify how many times each segment should be played, and in which order. Separate playthrough numbers with commas.