Hi I was wondering if there is an easy way to force a drum fill in a measure?

Example I have a 4 measure intro and want to force drum fills in the 3rd and 4th measure... Can this be done in the chord window?


Biab 2019 ultra pack
Dell laptop I7 running windows 2010
Midi keyboard
Roland BR600 8 track recorder
Sonar X3 producer
flstudio 20