Fortexorcist & DK

[Aenemy]

Hello,

i have a question on the fortexorcist config.
I play a DK.

Can i hyde a spell in the cooldown timer only when this spell is really used ?
I explain with an example :
When i use my two unholy rune my boneshield is on the cooldown timer.
If i hyde the spell 'bone shield" when i really used it i can't see him on my cooldown timer...
If i don't hyde him, i'm flooded by this spell all the time i've used my two unholy rune !

help me if an issue is possible please !