How do you snap midi notes to grid please?

Hi all,
I have just downloaded n-track for Android and I was wondering if someone could tell me how to snap the midi notes to the grid in it?
Thanks heaps.

Hi all. I’ve figured it out now
It took me a few watchings of the tutorial video & some experimentation to understand it all but it makes sense now.
The process is a bit complicated to explain, so I won’t try but if you are stuck on this issue, just watch the tutorial video on the User Guide page a few times, & it’ll make sense.
Thank you.