Hello,
Since yesterday I use and adapt php-fusion 9.03 for my website.

I have a problem with permalinks. I would like to get article url without ID and only lower letters.

For example :
/article/How-To-Do-Lower-Case/1

is supposed to look :
/article/how-to-do-lower-case

Is it possible to set this through Panel Admin?

You will find system rewrite rules in \includes\rewrites and Infusions rewrite rules under permalinks - "infusions\articles\permalinks"
We have ambitions to make it work with Aliases that can be handles from the Admin in the future but atm you need to do manual edits, it may be very tricky to make it work without IDs when the alias engine is not 100%.
After each change you do the module needs to be reinstalled.

For lowercase you would need to alter the title of the Articles infusion, example : strtolower($title);
But would prolly be better to simply write the titles as you want em displayed.