Can anyone tell me how to (K1, P1, K1) all in same stitch. I have a pattern with this in it and I am not sure how to do this. Thanks!

It’s not that difficult. Just knit the first stitch, but don’t slide it off. Bring the yarn to the front and purl into the same stitch, and still don’t slide it off. Move the yarn back, knit into the same stitch again and then slide it off.