This is very detailed and helpful, many many thanks! I just did as per your suggestion. I also called UKVI and they said that this alternative was OK. Now I'm facing another problem. For some reason the payment of the visa (after I finish paying the IHS) is not processes. I've tried 6 or 7 seven tim...

You should re-enter your wife, otherwise she's not recognised as dependant. I made the mistake of not including her as dependant and then I had to do the whole application again.
Hope this helps.

Dear forum members and moderators. I'm new to the forum. This is my problem: Today I have submitted my GTV Stage 2, to enter the UK for 3 years, paying for my IHS surcharge and the visa fee. In parallel I have filled the applications for my spouse and our dependant children, but I finished mine firs...