The phrase "to approve the waiver" means giving permission to not follow a particular rule or requirement.
Sentences with «to approve the waiver»
If your mortgage lender approves a waiver of the due on sale clause then you are free to transfer your home to your children even while the mortgage remains outstanding. (sapling.com)
The board approved the waiver — plus two more, for other schools. (educationnext.org)
See the latest waiver information, including the original and approved waiver plans for each state. (ascd.org)