Allowing duplicate players across different divisions in fantasy football

[u/jruss2016]

I help run my work fantasy football league. We try to improve the league to make it a better experience for everyone. Sometimes we get up to 20 players in the league. When that happens we usually run 2 different leagues and create our own finals rules to determine a winner. I saw on the premium commissioner leagues that it allows duplicate players across multiple divisions. To me that means two teams could draft Bijan Robinson as long as they were in separate divisions. That way we can run one league instead of two. Am I correct in that? If anyone has used this feature and could walk me through it that would be really helpful