Jonathan,

You need to find a style that's in 6/4 time. Use the style picker, and scroll down the categories, and you should find some different time signature styles. In my version, these are right beneath "Waltzes".

Another option for 6/4 would be to use two measures of waltz time for each one measure of 6/4 time, and double your tempo. That kind of workaround gets sort of convoluted.

Good luck,

Bruce


Macbook Pro 2018
2.6 GHz 6-core Intel Core i7, 16 GB RAM
OS Monterey
BIAB for Mac 2022