I came across a post from this spring which may be of use. The post is about some features that were released in an SDK update, but they were related to motor_groups and the drivetrain. Looks like you can pair two motors up with a motor_group, and initialize a drivetrain with two motor_groups. It doesn’t seem like this can be done with the visual config, but the example given in the post makes it look pretty straight forward. I also linked to this post in the thread DougMoyers referenced, so people can find it there as well. Hope this helps.