If the ranking is “Open” (Link to ranking types) you will be able to select levels and continue with your tournament setup.
If the ranking is “With Permission”(Link to faq - what is ranking with permission), the ranking has to be approved by the owner and the ranking owner has to select the levels (Link to faq- 9. How ranking owner can approve Ranking with permission), otherwise you will not be able to generate standings and finish the tournament.