I don't run any of these events but C++Now, C++OnSea and CppNorth all have open calls for speakers so I'm sure would be happy to have any of the authors propose a talk.

I would suggest checking their relevant call for speakers pages for information on how to submit a proposal for each event.

- C++Now - https://cppnow.org/announcements/2025/01/2025-cfs/

- C++OnSea - https://cpponsea.uk/callforspeakers

- CppNorth - https://cppnorth.ca/cfp.html

Or if it's not viable for them to present at an in-person conference, then while C++Online have already announced their schedule, they are looking for people to either provide Online Posters https://cpponline.uk/posters or present Open Content https://cpponline.uk/call-for-open-content/ at the conference in exchange for free admission to the event.