The short answer: No, you can't scan multiple rooms at once. Yes, you can submit multiple rooms per project.
A project contains one or more rooms, which you can capture using the app. You can submit multiple rooms for each project. However, you can only capture one room at a time. For example, if you want to include your kitchen and living room in a project, you have to create a room for each of them. If you decide to capture both at one time, PLNAR will probably not be able to create an accurate 3-D model and you will be asked to start the process again.
In order to add additional rooms to your project, simply click on the (+) button on the lower right hand side of the Snap App.
For a video on how to capture a room using the PLNAR SNAP App, check out this article.
If you have more questions regarding the SNAP App, please check out the answers to our most frequently asked questions about the app in our learning center located here.