Enchants & Sockets for Armors?

There are different ways to do it (as there are different incarnations of such systems).

You can e.g. use the equipment's settings to add additional equipment parts for enchantments/sockets, which can be simply set up as additional equipment for those slots.

Or, if it should be something bound to an equipment directly (and permanent), you can use the event system to change an equipment, e.g. changing the name, adding status value bonuses or equipment variables, etc.