How do i change jack option

Hello, i've bought a new motherboard which is ASUS M5A78L-M/USB3.It has 6 jack slots.I've downloaded the audio driver for it from asus.com which is VIA HD Audio Deck.I have a Creative A520 (5.1 Sound system)

Now to what i want,
Since i have 6 jack slots and my sound system has 3 jacks plus a microphone i get 2 free slots.I have a headphone and i usually listen or play my games on that and sometimes i open the 5.1 for musics.My computer case is a little far from me and i'm a bit lazy to change the jacks everytime i wanna listen music.On a motherboard i had in the past it had a function to change line-in to microphone or headphone etc. I can't find that option on VIA HD Audio Deck and i can't see the gray jack in VIA.


What i wanna do is i'm gonna plug my headphones to the green jack and the 3 jacks of 5.1 to the rest and change the grey jack to the same with headphones so both will be giving audio and i'll close the 5.1 when i don't need it.
Do you know where is it or is there a way to this?

It seems i was lacking in the search department i had a tab left open before i post this, the solution was there if anyone wants to know you have to change the registery
"HKEY_CURRENT_USER\System\CurrentControlSet\Service s\VIA HD Audio Codec Default\VDeckINI\VDeck\OPTIONS

In this path you will find a key called "BackPanel_JackRetasking".
Open this key and change this value to 1."

But i still don't know why i don't see the grey jack do you know anything about that?

you probably have enabled function Independant Headphones