Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
I presume that your XS7 is the Yamaha Motif XS7.
I am guessing that 'adding a 3/4 time performance' means adding an Accompaniment in 3/4 time. If I'm wrong about either of those guesses, please let me know.
If what you need is the basic information, it's this simple:
- you have to be in the Pattern Mode, nsot the Song Mode.
- you can then record (playing them on the keyboard) several Sections, and combine those sections into a Pattern Chain, in which your rhythm goes through all the sections
...or the like. Is that what would meet the needs of what you have in mind? if so, and if you need further details, let me know.