Single increase across a row:
Work 2 stitches into the one below.

Multiple increases at start of row:
Add the number of increased stitches needed to the number of turning chains being used, turn the piece and work into the new stitches.

Multiple increases at the end of a row:

(a) To make the first additional increase stitch, insert the hook through the lower part of the last stitch made and

(b) wrap yarn round the hook and pull through = 2 stitches on hook. Wrap yarn round hook again and pull through both loops. Continue inserting the hook into the base of the stitch just completed to work the required number of additional stitches.