Addons on steamcmd server (Gmad or workshop collection)

Guys, I need help.
The fact is that I have a server ttt. I put there addons (weapons) through a collection. And I wanted to change the value of the damage, ammo, etc.
Do I need to install add-ons through GMAD, to change the values?
Or how to find all weapons?
Sry for mistakes

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