It weaves always from right to left, so the tissue must be rotated at the end of each row.
Turning the tissue, the thread will be back behind the needle to work the next row introducing it at the top of the stitch of the previous row. In contrast, circular tissues always are crocheting in the same direction.
All stitches are formed with different numbers of loops, so each one has different height.
Therefore, every stitch needs a different amount of chains to return, avoiding defects on the edges. When you are simple crochet, 1 chain to rotate; half double crochet, 2 chains and double crochet, 3 chains.
The number of chains made must amount to the height of the point you're weaving.