Formations

Hey guys,
I'm just wondering if there's a way I can edit the formation shapes that are available in the team tactics screen? I'm playing Zero Sea's 3-4-3 which has three CBs, a DM, a CM, ML, MR and three STs. Can I edit or replace one of the formations myself to set this up?
Cheers,
Ed

Bumping this because I am also interested in being able to add/edit formations. A cool, new feature for future releases could be the possibility to just drag around the player markers on the formation screen and GS instantly calculates best possible formation for that tactic. So instead of using preset formations, you could for example drag the 2 wingers in a 4-4-2 formation to one AMC and one DM and GS calculates the best team for this 4-1-2-1-2 diamond formation.

So this would be cool but for now, as I said, just being able to edit the presets or adding a new tactic would be cool if anyone knew a solution. Cheers