Question about definition file

I don't know if this is the right forum for this or not so forgive me if I'm posting in the wrong forum

I've been repacking some of my very old games, and adding a game definition file to the installation

now i know that the file have to be signed for the content rating to appear

what I am asking is, is there a way to add the "Signed" flag automatically?

noting that I already use the signed gameuxinstallhelper.dll to register the resource file

and thanks in advance you've been a great help to me so far