Im lvl 3, and Im asking often. If you want to know, you must ask. No1 is born learned.
The 2x button increases 4 of your sideline's instruction ( yelling to the players what to do ).
Affects : Attack, Deffence, Possesion and Condition.
Maximum of 10% bonus is available from training ( aside from associations ).
These bonuses should determine how effective your team will be during a match with the selected desired bonus.
Every bonus is 20 ( match ) minutes time.
Hope that helps