How to set keyboard shortcut to insert a timestamp (time & date) in KWrite?

KWrite is included as the default text editor in several popular Linux distros (such as Fedora KDE). Inserting a timestamp is a basic feature of text editors. How can one set a keyboard shortcut to insert a timestamp (time and date) in KWrite? It seems like it should be obvious, but I've gone through all the settings, read the small amount of documentation that exists, performed numerous searches, and even asked AI chatbots. Nothing had a solution (except AI, of course, which offered multiple solutions that weren't possible, which was a big waste of time). If I can have a choice of the formatting, YYYY-MM-DD HH:MM is preferred.