Rifle Scopes zeiss conquest 3x9x40 ????

Johnnytwoshots

Private
Minuteman
Dec 2, 2008
3
0
63
WV
Hey guys,
I am a newbie and own a Zeiss 3x9x40 scope. just bought my first .308 for hunting, ( rem. 700 VTR) I am eventually going to go long range with a .308 but decided I would start my journey with the VTR and a Conquest scope. As you all are probably aware the Conquest has a "zero" index you can set once it has been sighted in. the turret knob has a mark but there is nothing I can see on the scope body to align it to. Can I make my own or am i missing something???
thanks