Tasker: How can I randomize a wait action? I know how to make a randomize variable, but I don't see anywhere in the wait action to enter the variable.

I've been told to look for "crossed arrows" that will let me enter a specific value or a variable, but I don't see these crossed arrow anywhere.
I just had to disable beginner mode in Tasker preferences. The crossed arrows (shuffle symbol) showed up after that.