Enter start city/town, then multiple waypoints one by one that you want to visit, and end with finish city/town. BTW it's possible to copy/paste column text, separated by new line. If you enter this sequence into that field, you will get it ready for search.

Adelaide Daylesford, Victoria Grampians National Park Melbourne

Adelaide is start, Melbourne is finish. Two waypoints in the middle, could be routed, could be skipped, depending on time, budget, comfort, curiosity levels.