I am developing a slide which has 5 layers. (Layer A/B/C/D/E)
On the base slide, there are 3 buttons. The three buttons link to layers A&B, C, D.
I would like layer E to appear after all three buttons have been visited.
Currently, I have tried one trigger on the base slide. However, layer E appears as soon as I click on the button that leads to layer D.