Superior sigil of air

Hi all, i play a guardian, and i am using scepter and focus on my of hand, now i am using superior sigil of force in ym scepter and superior sigil of air in my of hand, my question is will my scepter proc the air sigil procs if the sigil is on the focus, or do i need to put it on my scepter to proc it ?

as long as your character is using the weapon with the sigil on it it will proc, i.e, you can see your character wielding it in combat

The sigil can activate regardless of whether it is on your main hand weapon or the off hand weapon of your currently active weapon set.

Using scepter + focus with the sigil on focus, then using a scepter skill (1-2-3) will still permit the sigil on the focus to activate. You don't have to use one of the two off hand focus skills (4-5) for it to activate.

I often use Sigil of Fire + Sigil of Air in combination as they will both activate during combat even if you are auto-attacking with the default main hand weapon skill (1).