Creating a Round robin lead distribution queue

[Asmeele]

We have been using a round robin with random sampling like this: https://nation.marketo.com/t5/knowledgebase/distribute-your-leads-round-robin-or-randomly/ta-p/24862... but there are discussions about the fairness of the random sample and it has been requested that we try a round robin queue.

For example tasks go to Salesperson 1 the 2 then 3 and then the fourth task would go back to Salesperson 1 so the queue works in a linear order rather than randomly.

I cant find a good way to do this in single flow. 

Idea I've had but can't create - this would create a cycle but unsure how I can phrase that in a Marketo flow

(if last task was allocated to this Salesperson 1, allocate to Salesperson 2...ect...default option go to Salesperson 1)

Any help or ideas would be much appreciated

[SanfordWhiteman]

You can't do this with a native flow step because there won't be a shared state (i.e. counter) to increment. It requires a webhook-compatible service, which can distribute leads 1-2-3-1-2-3-1-2-3 without repeating.