Point Blank Official Extension || Template Pack

Locate your directory--the same place where your mods folder, your resource packs folder, saves, etc. are at. Create a new folder in there called 'pointblank':

Inside this folder, put the content pack zip file you installed. You can have as many content packs in there as you want.

Done!

Once you load the game, the content pack will be installed. This process also works for installing content pack on servers. Be advised that players joining a server will also need to install the same content packs.