Gameplan Editor is the page in where we actually set our gameplan playcalling tendencies. The (image on the right) two dropdown boxes and an update button are used to select the situations you are adjusting.
The slider bar setting is how to setup the automanagers playcalling tendencies when in the listed situations. A setting of 20 is the maximum setting with 0 being the minimum.
(ADMIN NOTES NEEDED as to what 0 and 20 actually means) becaue I don't really know :)