Once approved, the listing appears under Listings → My Listings and you can edit it like any of your own.
What to do first
- Check and correct the address, phone and hours.
- Replace any photo that is not yours.
- Rewrite the description in your own words.
- Set the category and tags properly.
- Add your languages and amenities.
A claimed listing often carries details entered by somebody who was guessing. Go through all of it.