[josuesitan]

Hi guys, please could you tell me how to do this in Mastercam X3 using contour function

[GM81]

In the bottom right of your contour window check the box next to the tabs button then click the tabs button. From there define your tabs how ever you want them.

[cadcam]

I would look at nesting options for all the parts and use taps with it.
Or you can create square points were you want the tabs then pick the taps option using these points in your contour options tree.