Using Byobu, how do you split the screen when using PuTTY?

When running Byobu, how do you split the screen when using PuTTY?

Pressing Ctrl+F2 just prints a character in the terminal.

I know this is an old question - but in case you did not get any answer....

I just started using Byobu with PuTTY, and found that I can use Ctrl+A, % to split the screen vertically and Ctrl+A, | to split the active pane horizontally.

These key commands are based on the screen program. You can find more at the screen man page.

Obviously Ctrl+A is the prefix I'm using, change that to whatever prefix you are using.

Hope this helps someone!

In my mapping, I use CtrlA to move to beginning of line, and the escape char is F12. so it becomes:

F12% to split vertically; and
F12| (pipe Shift\) to split horizontally