my wife does daycare at home. turned my attached garage years ago into giant family room and built me a larger detached garage. she uses the family room for daycare. a few of the kids that used "potty chairs" are now a little old for that. so now they have to go upstairs to the bathroom. to much traffic in house and its showing. i need to add at least a toilet for now in the big room.my question is this room is lower/dropped 2-3 ft. from my house. i know it can still be done. can someone explain to me how this works or whats involved.thanks in advance.