Hi. I'll try to provide info about each question and will number them 1-3 in the order asked:
1. Not that I'm aware of. But to be fair, the test steps have large numbers next to them so that's a good clue about the order 😊. While the order of step execution is not mandatory, if a tester does skip a step for a reason, I ask them to always set the status of a test step to Blocked or Fail AND create an Issue so that the cause of the missed step can be managed.
2. Sadly, there's no notification feature as yet. I hope this is coming soon as it would be a major improvement for everyone. I manage this gap using reports and dashboards for me and stakeholders at project level, for workstream and team leads at a team level, and another for testers.
3. Technically yes but if you're adding test cases manually you have to add test cases in the order you want them to appear. You can add them all at the same time in one activity but the order that you click them to be added is the order they will appear. If you save those additions and then go back to add more, those new additions will appear at the top of your list. If you get the order wrong, you can manually drag test cases into the order you want. Alternatively, you can import test cases by CSV and do all the sorting in the CSV before import - I'm assuming that the order in the CSV is used. Be mindful that the test case order you specify could be changed if a tester changes the sort order of test cases in the Test Player, e.g. sort by Status.
Hope that helps.
Andy