Hard Disk Manager 17 - How do I delete an extended partition?

Just started with HDM 17. Unable to delete an extended partition. Where is the option to do this?

Select the frame and delete it like any primary partition ....

When I select the frame it does not give me the option to delete it.

Ok, I see now what I have to do. Its a really fiddly operation to select the frame.
Not sure this version 17 is an improvement over my old version 15.

It's been none easier in 15 to hit the frame as I remember.