Please extend non-default attribution to visits

[#1]

Description - Non-default attribution only works for some dimensions like booking, but I would like it also for visits so I can deduplicate my traffic from various marketing channels

Why is this feature important to you - Without this, I don't have a clean way to track my traffic source

How would you like the feature to work - Just extend non-default attribute feature to "Visits"

Current Behaviour - Can't do any deduplication currently