Also, you can append text to the clipboard with NVDA, using the same hotkey that JAWS uses for this function, if you install the Clip Contents Designer add-on from the add-on store via the NVDA menu. The add-on also lets you clear the contents of the clipboard as well as being able to view the contents of the clipboard. Hotkeys for this add-on can be reassigned or added to other keys by using NVDA's Input Gestures dialog, as it has a category for the Clip Contents Designer add-on once that add-on is installed.
Any NVDA user who needs to do a lot of clipboard management shouldn't be without this add-on. #NVDA

@payown @CreativeChris I should also mention that, if you want that newly modified keystroke to be available globally, don't forget to choose the default configuration from within Keyboard Manager by pressing shift+ctrl+D. You guys likely already know that but it's worth mentioning for those who are new to Keyboard Manager.
Also, as an odd keyboard shortcut, insert+8 (on the row of numbers) can be used to open Keyboard Manager; that one's been in JAWS for ages. It's a bit faster than the other ways of opening Keyboard Manager but it's not as intuitive. I still use it as it's one of the first ways I learned to open Keyboard Manager.