How do I assign my player classes?

[D3athChick3n]

Okay maybe someone could help me here, I am trying to assign my player classes for my gamemode and as far as I know I set up my player classes correctly. But how do I assign them and where do I assign them? I have tried many different ways in shared.lua and init.lua but none have worked so far.
So far no errors have showed up concerning the classes when I tried assigning then but the player just doesn't have any of the class' elements.
:L Can anyone help?

[MattJeanes]

I do it in PlayerInitialSpawn and PlayerSpawn. Probably not the best way but hey it works.

Like so:

function GM:PlayerInitialSpawn( ply )
    ply:SetTeam(1)
    player_manager.SetPlayerClass(ply, "player_abyssrp")
end

function GM:PlayerSpawn( ply )
    player_manager.SetPlayerClass(ply, "player_abyssrp")
    self.BaseClass.BaseClass.PlayerSpawn(self,ply) -- This calls base gamemode PlayerSpawn since I derive from Sandbox
end

Obviously replace player_abyssrp with your own playerclass.