If you have CLB 4 or lower on your IELTS result while you have CLB7 or better in TEF French test, you may claim for 15 points;Where does the additional 15pts come from them?
CLB5 or better on IELTS results with CLB 7 or better in TEF French test, you may claim for 30 points.
In both scenario, only principal applicant could claim for those points.