Hi Monika,
Currently, OneDrive for Business Mac client can only sync OneDrive for Business library, team site libraries are not support. In addition, the sync now option in library in browser is only available in Windows client, it does not support Mac computer.
Given the situation, I’d like to invite you to submit feedback to our related team via: Feedback. Many features have been designed or upgraded based on customers’ constructive comments. Thanks for your time and understanding.
Best Regards,
Vincent
