Dear @Christine Egan
Yes, Windows 11 can be installed on an M4 MacBook Pro, but not via Boot Camp. You can run Windows 11 ARM in a virtual machine using. https://support.microsoft.com/en-us/windows/experience/platform-variants/options-for-using-windows-11-with-mac-computers-with-apple-m1-m2-and-m3-chips (M4 missing, but working)
For example:
Best regards,
Bence