Not sure where you are in the software but controlling the note should certainly be an option.
Do you have the User Guide/Manual?
https
/www.image-line.com/support/FLHelp/
Maybe some default is set to "whole note". Or you must make some manual change to the note via the graphics.
Can you grab and drag or otherwise change the length of slide bars? Seems to me as if that would be the way to do it....