06:43 Oct 11, 2011 

I've now come to a screen shot menu where we see a list of 5 degrees of skill, from expertise to non maîtrisé + sans objet. Each level is associated with a percentage, 100% for the best, then 75, 50, 25 and 0%. Each of these is identified also by a "puce", letters A to E (see previous question on puce = bullet).
Above that menu we have a window labelled "pourcentage pour la pondération de 0 à ... and then the window where you set the weighting, which in the screen shot is 100%.
So I suppose they mean you to leave that setting at 100%.
This I think bears out your remark Tony.

05:30 Oct 11, 2011 

It sounds as if just one weighting percentage is being entered? if that is the case, I think this is more likely to actually mean "always leave at the default value of 100%"; only if the person actually has to enter several different weighting percentages would I say that it means "weighting factors must add up to 100%" — but I think 'laisser' is rather an odd way to express that.

22:18 Oct 10, 2011 

with Rosa & Matthew

21:40 Oct 10, 2011 

I believe you've understood well.

Always "leave" (allow) 100% to be the total when percentages are added up.

21:28 Oct 10, 2011 

Thanks!

21:24 Oct 10, 2011 

I agree with your interpretation.