Support is a rare specialty.
First the match engine decides if a support event is extracted. Then it compares the relevant skill of the Support player with the average level of that skill in the opposing team; the experience of the Support player is also important in comparison with the average experience of the opposing team.
|Center back or full back||Defending|
Only if the check succeeds, Support player will experience a positive event. This will make the teammates perform better with a 20% total boost.
|Support plays as...||In position...||Bonus to...|
|Forward||Central||10% to left Forward||+ 10% to right forward|
|Side (Right/Left)||10% to Middle Forward||+ 10% to right/left Winger|
|Inner Midfielder||Middle||10% to Middle CD||+ 10% to middle FW|
|Right/Left IM||10% to right/left Winger||+ 5% to right/left CD||+ 5% to right/left FW|
|Winger||10% on left/right Forward||+ 10% on left/right Wingback|
|Defender||Central||10% to left Defender||+ 10% to right Defender|
|Right/Left||10% to middle Defender||+ 10% to right/left Wingback|
|Wing back||10% to left/right||+ 10% to right/left Winger|
But there are drawbacks for the whole team if the check fails. Then a new check starts and teammates will have a 15% chance of a drop in organization level.
There is no option to skill this check or directly influence it when triggered. The only way to lessen the chances of this drop, is to not outfield the Support when your opponent has higher main skill and experience.