Important info: This is one of the cases that when a file track name has an "-" the camtool app did not show the name of the available camtool file sets. So, what you have to do is, in the Settings menu, Load, than type atr then click load and turn on the power button and you are done as seen on the video far bellow that page. 
Track: https://www.racedepartment.com/downloads/matra-park.4832/
Instructions to use the Camtool
How to use this file:
If you don't have it, install Camtool app: https://www.racedepartment.com/downloads/camtool-2.15062/
Extract the my rar file here:
\SteamLibrary\steamapps\common\assettocorsa\apps\python\CamTool_2\data
Then load the file in the Camtool app:
Really simple and fast how to properly load the camtool file for this track and possibly others:
Track: https://www.racedepartment.com/downloads/matra-park.4832/
Instructions to use the Camtool
How to use this file:
If you don't have it, install Camtool app: https://www.racedepartment.com/downloads/camtool-2.15062/
Extract the my rar file here:
\SteamLibrary\steamapps\common\assettocorsa\apps\python\CamTool_2\data
Then load the file in the Camtool app:
Really simple and fast how to properly load the camtool file for this track and possibly others:
