Accepted behaviour while working in international collaborations
There is no international standard of etiquette. Cultures differ so much between countries (and within countries) that I think it would be impossible to agree on the details of such a thing. What you are discovering is part of the fun of collaborating with other people from different countries: you get to indirectly learn about the cultures and working practices of those countries.
In situations like this, my advice is to take it on a case-by-case basis. Ask your collaborators early on whether they prefer you to take the lead on suggesting meeting times and related goals, or whether they would prefer to communicate with you as and when they make progress. That way you can ensure that everyone is happy as the collaboration goes on, and you can always check in with them later on to see that the arrangement is still working for everyone.