As of July 2017, you will be able to select multiple whiteboards for a single patient. To put a patient into multiple whiteboards on the web application: go into 'Edit Patient', then 'Show More Information', then you will be able to enter multiple whiteboards under the 'Whiteboards' section. 

On the iPad, you will need to select 'Edit', then 'Edit Info', then select 'Whiteboard'. From here, to be able to choose multiple whiteboards, you will need to click on the circles beside the whiteboard names.