Nice to meet you. Yes, I’m from Paris. It’s a pleasure to talk to you in Brazil. It’s OK to speak in english, i translate myself 
Indeed, the ideal would be that on the page that I showed you in screenshot is displayed the history of the last control. That would save time.
On the historical part, the idea was not to open a repeating group but a PDF file that will have been saved before by clicking on my save button.
The whole difficulty is to have a repeating group that displays all the vehicles but only one input per control point to indicate the state of the vehicle. When saving, I can’t make my input (the one in my first line of the repeating group) multiply and capture the value of each of the lines.
So I tell myself that my method is perhaps not the right one.
I put a photo of my page under construction maybe it can help: a line with an input for the lights, an input for the brakes, … which multiplies according to the number of vehicles but with the name of the input which remains the same…
Do you think I should create a database per vehicle?
Maybe that would be easier for my workflow then?