Related action visibility

Hi,

We are using related action heavily in our application. When a user clicks the related action multiple time repeatedly with less than seconds difference or, if two users click on the related action at the same time, then multiple instance of the process start, we should avoid this, the process should only start once for the person who clicked it the first time.
I tried to solve this in multiple ways:
1. I made a process model report for this process and used query analytics expression to get a count of instances of the process by passing some process variables, now I used this in the exception flow and checked if the count is greater than 1 then end the process. In this case when related action is clicked multiple times all the instances are ending by exception.
2. I made a task report by process model and used query analytics expression to get a count of "assigned" and "accepted" ...

OriginalPostID-240499