There is option in CST, to bend any structure at some angle. Go to tool of CST, where you can easily find the bend option, But you will have take precaution like you can form separate structures and apply bend where you actually want, and there after, you will have to apply Boolean operator to unite them.
You can easily bend the sheet, but for solid, you have to apply subtract method by forming another structure.
You should firstly learn working with curves in CST.. Then you easily can bend everything you want. Search about CST curves in google and youtube. you will find a lot of interesting tutorials about it.