Nest manager plz help

Hi I am having trouble getting nest manager on to my app dun every thing that I have been to do but when it comes to finding it in my apps it’s not ther I am new to this sort of thing so if eny one nose of a step bye step guide to doing this for a novice would be very grateful

A good place to start is at the NST Manager thread. There is an installation guide you can find near the top of the post. If you have any further questions, you can post there.