Please Prashant
1 For a portable projector moving it from one room to another you have to re calibrate completely four Corner correct
it should save options in 4 corner so when yoy move to two rooms in house in the same spot you can use saved setting
eg living room save and bedroom save
2 Also force to get Focus wheel on shaking or moving around the projector
We need is simple app on the the home page to click bring up Focus wheel makes 100% sense for portable projector
Hope Prashant you can do this thank you