Advisory groups and working groups help us to stay focused and inclusive. We also have more formal committees that have a role specified in the by-laws or have been set up by the board with a particular remit. We’ve also listed a few ‘interest groups’ and these are the least formal, like community calls, where participants can be involved ad hoc and participate sporadically. These groups are a good way for people across the community to get involved in Crossref’s work to support and improve our scholarly infrastructure. They are slightly different as described below but both are open to non-members and members alike.