Hi Tom,
Thanks for getting in touch with us.
During the setup wizard, you could use the article Schema and that will be chosen as the default Schema for all your old and new posts.
However, any other Schema cannot be used as bulk since all of them require additional input and need to be changed on a post to post basis.
Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.