This might be confusing ( questions about classes)

am I allowed to make different classes outa my classes? If they all have access to the same traits and are built off each other do Advanced weapons need to have the same advanced property for other class levels or can I give squads/different levels their own advanced abilities?

like do I need to do,

-Improved Melee Weapons (Armory): Advanced Melee Weapons 1 7pts (Martial axes)

and then no other melee weapon can use that advanced weapon I figured I could pick and choose, because It dosnt stat that it actually only gives the Advanced trait to a single weapon/armour that must be picked when picking the trait. and since multiple armoury traits have a choice between two weapons that could be taken the choice on which weapon has the Advanced trait would depend on what weapon the squad is being fielded with. so as my Amon'Cor Dwarves have access to multiple equipment via faction and class traits.

can I make a Amon'Cor squad thats fielded with

-advanced rifle (property),

and another squad of Amon'Cor dwarves thats fielded with

-advanced Martial axes

Can I do this?

and so on?

or do I have to choose what my Amon'cor dwarves are going to use then every squad I field of that class would have to be the same