I'm making this:
For my 14yo son (a raglan sweater) and the instructions say:
When the raglan equals the raglan measurement, slip the sleeve stitches on to a holder (or a piece of yarn) and remove the B markers. Add one inch of stitches under the arm.
But I don't know how or where to add the stitches. What kind of increase or cast-on should I use? Do I add 1" total, so 1/2" each side, or 1" each side?
Thanks for the help in advance!