Jump from event page 1 to 2

Presuming I've got an event composed of two pages like

Page 1.
Autoswitch A ON

Page 2 (which require switch A ON)
Talking, ecc ecc

Is there a way to call the Page 2 things when reached the end of Page 1?

you misunderstood how event pages work.

At any time, there can be only one active page on any event (it is possible to have no active page, but it is not possible to have multiple active pages.
Which page is active is determined by a combination of page priority and page conditions.

To be active all conditions of that page has to be fulfilled, and if more than one page has all conditions fulfilled then the page with the highest number has the highest priority and becomes active.

So you can switch to page two by giving the commands to activate all conditions of page 2 at the end of page one - and to return back to page one you need to disable at least one of those conditions.

As a general hint, it is usually a bad idea to switch pages within a single cutscene, unless that is for display only and there are no commands on the other pages (which usually means remote switching pages).

If you tell us what exactly you're planning to do (best with screenshots of the event) we can tell you if it works or how to do it better.

Yep, for this just put either a switch, self switch, or variable into the conditions box on page two then on the end of your events on page 1 turn that switch on or set the variable to the desired setting for page 2. Then when the page 1 event gets to the bottom it will check over to page 2 until the switch is turned off or the variable is reset.

Wait, I know what you're meaning and I know it. Problem is that the event page 2 must be manually called on the player and it is the continue of page 1, so setting it on autorun will not do the trick.

After activing page 2 I want to call the events with a script or a command, or whatever for just one time. Is it possible?

why would you need to go to two pages for that? why not place the choice below the commands on the first page?

And you're confusing in your questions - first you declare that the second page has to be manually activated and that it cannot be set to autorun, and then you ask how to skip the manual activation and avoid it? That is what autorun dies - skip the click needed.

Because I got a 50+ lines event. It is a nightmare to code like that, I could also call common events and manage things like that, but it could also another-kind-of-nightmare ^^"
The autorun could do the trick but I want that the page could run just one time.

The alternative could be to change the change the event type from auto to manual after the first run, but this can't be done without creating a 3rd page with a switch...

Perhaps you should give a more detailed description of what you want to happen to the player ingame, instead of telling how you want something to happen.
There are usually workarounds to anything, but we don't know enough about your event to even guess what should happen.

Solved with delay + switches. :)