How Bonuses work in Associations

[Moi]

Moi... pls answer following question:

If you have all bonusses at 10%, how will they work at livegame:

1.) you don't activate one, so all got 10%. You acitivate f.e. attack, so you got 15% for attacking, but 0% to other three bonusses
2.) you don't activate one, so still got 0% for all. You acitivate f.e. attack, so you got 15% for attacking, but 0% to other three bonusses
3.) you don't activate one, so all got 10%. You acitivate f.e. attack, so you got 15% for attacking, and 10% to other three bonusses

It makes me crazy, that after activating one, all other become "darker". So, if it's no. 3, why don't lock only the buttons?

Activating one doesn't make the others go down