You'll need to redistribute the excess in a way that won't deflate/correct the overall percent of effort. To do that, you'll want to take the following steps in order:
- Add a new row from the N-OTC row
- Redistribute the excess effort from the N-OTC row to the new row
- Update the chartstring on the new row to an unrestricted chartstring
- Click 'Calculate Cap Rules'
Calculate Cap Rules moves the excess amount from the N-OTC and Y-OTC rows to the new row, while preserving the total effort.