Need Help! PLEASE!

A week ago I bought myself CS Anthology. Earlier, few months ago, I bought Garry’s mod. And now, I’ve got a problem. I wanted to use CS and DoD props and ragdolls in Garry’s Mod,but the game hadn’t seen them. In the Extensions or something like that I saw Counter-Strike and Day of Defeat in the “Game Extensions” tab , but these tabs were “unavalible” or something this way. Please help.

You need Counter-Strike Source and Day of Defeat Source. You don’t have those games, you only got Counter-strike and Day of Defeat.