I've noticed that clipping paths are no longer part of IDCS6. There is a menu under "Objects" that says "Clipping Path", but the sub-menus under it are grayed out. Even when I try to create a clipping path the same way I've always done. I have a photograph in a round frame and I want to clip it with a rectangle so that the bottom and the right side are flat. Pretty simple stuff. Can anyone help? Please do not tell me where the menu commands are. I've already tried that. I must need to do something else. Of course, it is different from how AI works, but that is to be expected from a group of applications that have absolutely nothing in common. Thanks in advance for any help.
The clipping path is still in Indesign CS6. i will give you an document , there you can see how to use clipping path in Indesign CS6
To see clippin gpath options you'd need to have the image frame or the image selected, but from your desription I don't think you really want to use a clipping path (where your options are to detect edges, use a Photoshop path, or an alpha channel).
Instead, draw the rectangle you want to use to clip the oval frame and positionit as you want it, then move it behind the oval and select both. Open the Pathfinder panel and click the Intersect button.
Or for more flexibilty cut the oval frame and "Paste Into" the rectangle and you can move it around to change the masking any way you like.