Out of 8 iconclick buttons any 4 iconclick button needs to be clicked to activate the next button.

Hi Santos!

You can use variables and conditions on triggers to make this work as described in your post. I’ve attached a sample file that shows this. 

I’ve setup two different types of variables for this. The first is a number variable that keeps track of how many slides have been visited. I have triggers on each of the slides that add to that variable when the timeline starts with a condition that only lets that happen if the slide hasn’t been visited already. My second type of variable is a true/false one that tracks rather the slide has been visited or not. Folks can click the buttons to visit the slides as much as they want to but only the first visit counts toward the total. It's important to note that the order of the triggers is important here. The trigger that adds value to the number variable needs to come before the trigger to change the true/false variable. 

On my main slide, the next button is disabled on timeline start and there’s a trigger to enable that button when the timeline starts only if the condition is met that the number variable is greater than or equal to 4. 

Hope that helps! Let us know if you have any questions.