Yes, most addons have the same way of installing. Sometimes they are clientside only, sometimes serverside only but most times both the server and client need the addon. Always read the info on the downloadpage and in the readme.
Easiest is when you provide all your clients with a package which contains all addons/mods you use in your missions or make a page linking to all those addons/mods so they can easily find them.
Copyright (c) 2006 - 2020 Armaholic.com All Rights Reserved.
Armed Assault, ArmA: Combat Operations, ArmA: Queen's Gambit, Arma 2, Arma 2: Operation Arrowhead, Arma 2: Combined Operations, Arma 2: British Armed Forces, Arma 2: Private Military Company, Arma 2: Army of the Czech Republic, Arma 2: Reinforcements, Arma 2: Firing Range and Arma 3 are trademarks or registered trademarks of Bohemia Interactive a.s.