A:AnswerHi, JoiDeVivre. So long as you're keeping the background processes to a minimum when using the P12 as a second display, it should work smoothly (so long as you have a solid wireless connection).
A:AnswerHi, Mar9713. This specific use case is not something we have tested internally; however, if the whiteboard responds to user input from the tablet and recognizes the pen as an input device, it should work.
A:AnswerThe case is available from Lenovo at
https://www.lenovo.com/us/en/p/accessories-and-software/tablet-accessories/tablet-accessories_android-tablets/zg38c05250,
plus it's on sale
A:AnswerMy wife uses it. Works great. Just make sure you save and close when you're not using it because it's a resource hog and these things don't have infinite ram.