Is it possible to preview effect in event manager?
Or is the only way to simulate each time?
Unfortunately there isn't any possibility to preview the effect at the events manager and you will need simulating each time you use any of them however you can visualize them previously here:
How to download the example above as vp file?
I just want to understand how it centers pop-ups regardless screen size.
You will be able to download the example at this tutorial:
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