Synchronizing iMessage across MacBook, iPad, and iPhone

I use a MacBook Pro, an iPad and iPhone. When someone uses iMessage to contact me their message may appear on any one of them. How can I sync all 3 so messages will show on whatever I'm using at the time

MacBook running Sequoia 15.6.1. Ipad running iOS18.6.2. iPhone running iOS 26.0.1.

[Edited by Moderator]