There is a row/round conflict with your instructions.
That aside, you're not going to be able to increase without it being noticeable--you're adding stitches, after all.
If you are working in the round, when you get to the last stitch and it's a knit, k,p into that last stitch. If it is a purl, p,k into the last stitch.
On the first stitch after the marker, either p,k into the stitch or k,p in the stitch.
You'll want to end up with
[COLOR=Red]p[/COLOR]kkppkkppkkppkkpp[COLOR=Red]k[/COLOR] after the first increases
[COLOR=Red]pp[/COLOR]kkppkkppkkppkkpp[COLOR=Red]kk[/COLOR] [COLOR=Black]after the next increases[/COLOR]