I am adding a wet bar in my basement.Can someone help me with the way I should vent this.I do have an existing vent from other fixtures in the house.

I am adding a wet bar in my basement.Can someone help me with the way i should vent this.I do have an existing vent from other fixtures in the house.
If you revent you must revent back into a dry vent at least 6" over the highest fixture on that vent. Or you can simply add a tee and a AAV,(air admittance valve) downstream of the trap. Good luck, Tom