You can install it as you like, just go to File → Settings → IDE Settings → keyboard layout →, then set a shortcut.
To go to the beginning / end of a file, use ctrl+home/ctrl+end on Windows/Unix
or command-home and command-end on Mac
In my windows, set the shortcuts to
crtl+m → to scroll to the middle of the file
crtl+up to scroll up
crtl+down to scroll down
Sparkon
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