Date of first entry in UK in the spouse visa application

[nadirhashmi]

I am applying for a spouse visa; my wife and children are British citizens. We relocated to the UK in 2021 for permanent settlement. Prior to that, we used to visit during holidays every 3-4 years.

In the spouse visa application, I am required to mention the date my children first entered the UK. Should I mention the date they entered for permanent settlement or the date they paid their first visit to the UK?
I'll appreciate any guidance/suggestion to answer this question. Thanks in advance.

Regards,
Nadir