How to bend part of mesh?

[rogi]

Hi guys,
please can someone tell me how to bend like this

I tried with curve but i absolutely dont know how it works.
I need to bend it and stay in place where is it, is part of Scope.
Thanks everyone.
HOW TO BEND.blend (984 KB)

[graeme_h]

I just separated the top portion, rotated it and moved it over. Then bridged them and moved some edges.

HOW_TO_BEND_OPTION.blend (984.6 KB)

[Xeofrios]

https://docs.blender.org/manual/en/2.80/modeling/meshes/editing/transform/bend.html