In that window set it to 2/4 .. 2 as numerator, 4 as denominator.
In the next measure set it back to 4/4 .. or whatever you started in.

RB is very good at handling time changes. I used the weird numbers in my image because you can!
BiaB is more limiting in this respect. In RB you can generate in 15/8 if you want to.

I find stuff like that fun..


I do not work here, but the benefits are still awesome
Make your sound your own!