Let my client approve estimates by the group or by the item, instead of all-or-nothing.

I am a handyman in Kansas City. We are looking for an estimate that we can create separate groups and optional items for a client to click to approve or decline an item or a group. We get a ton of to-do-list items and many of our estimates are 10-35 line items and all are optional items and most of them are in separate rooms/areas of a home. If the estimate must be approved as a whole vs approving groups or items then it probably won't work for us. That would have too many back and forth conversations with a potential client to make changes. I am very interested. Currently using Markate and Jobber.