@Elizabeth244 You will need to list your rooms separately as private rooms.
You could just have one private room listing for the three rooms together but then you will lose out on larger groups traveling together since they won't know by their search that it is actually three private rooms and might overlook it. Meanwhile, solo or smaller groups of travelers looking for one private room are not going to look at your three room listing because of the cost.
Savvy AirBnb travelers do search for a private room and then look to see if the host has other rooms listed that the rest of their groups could occupy. Newbies are not going to clue into this.
If you list whole house, you cannot occupy the space while the guests are present. So you could rent whole house but lock off your bedroom as not part of the listing, and move out to somewhere else while guests were in residence.
You could list all the private rooms separately or as a unit, and prepare another listing for whole house. Make SURE whole house is not on Instant Book. Then when requests or inquiries for the whole house come in, review them and if you don't want to move out, and the group seems suitable, decline them but refer them to your private room or rooms listing.
You could even list the three rooms together in one listing, also a listing for each room, and for whole house. You need to CAREFULLY manage your calendars yourself to prevent a double booking crisis!
AirBnb needs a category for shared house for your type of listing.