Oh I forgot to come back here to answer. I will do it today because I am dealing with camera profile again right now.
Totally right. Thank you again.
In fact the profile I have is to match better the colors from the scenary. When I shoot a nuance of blue, I will see the (nearly) same one on my (calibrated) monitor. I would say it is a general purpose to have a better rendition of the original colors of the shooted scene.
But it is not a 1:1 profile either because the person who make the profile has much more experience and then optimize it. I have to say, with the little I know, I am very happy with the result. For me it is a great starting point for the next edits.
In fact my main question was about PhotoLab’s workflow. If there was something to be aware and apply the profile in a certain step or time during the edition, but no, because all this is made automatically by PhotoLab’s internal workflow.
Now that I am more confident and read some discussion here these last years I understood and could answer my own question some time ago.
There is a piece of answer 
here about PhotoLab colors space / workflow for exporting photos.
Another piece here about internal workflow here.
And, sorry I can not find it right now, there is another post on the forum explaining PhotoLab’s internal workflow too. If I find it I will put a link here too.