I know how to increase with sts, but how do I increase while ribbing?
If you have to increase at the edge, like on a sleeve, you just k in the front and back of the edge stitch, and then incorporate it into the ribbing sequence on the next row.
If you’re increasing in the final row before starting stockinette, then it really doesn’t matter. You can just increase evenly across.
If you’re trying to increase in the middle of ribbing, and keep on ribbing, there’s really no invisible way to do it.