How do I make on tap event unique to trigger specific events?

By timeline, I mean events happening on the event sheet starting from up to downwards.

I have tried using signals, but all signals seem to happen at once. It could work if the signal could be called only once, but I can't seem to make it so.

I want to make a storyline where different events happen, then the user taps on the screen and the next events happen and so it can continue about N times per layout. Basically the "next event" function needed.

Can someone help me with an example event sheet please?

I need something like this:

On first tap: play event 2. items

2. event

On tap second: play event 3. items

3. event

On tap third: play event 4. items

4. event

and so on...

Can it be done within one layout and event sheet? That would be a huge help!