Try creating the flat portion first, then add the curved Edge Flange.
actually I would like the flange vertical from the bottom inside face which is curved - dont think it can be done. If you look at my image you can see where I cut a section to try to use sketch bend but it wont work on an already bent face !!! arrrrrggghhh
the best I can get is attached but I dont want the flat face!
Did some tinkering with that and realized there must be a tiny flat portion where you want the tab to be.
If the part I tried to attach comes thru you will see a .250 flat on a 6 inch radius.
Whiole it shows up in the model it would not show up in the finished part since the radius would have to be rolled to create it.
Hope that helps
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