To perform the exposure process of the Drawings/Tools/Rebar Numbering Settings icon is clicked. The Numbering Settings dialog then appears .
Rebar Numbering:
Project based global: It exposes the whole project at once, regardless of features such as element, story, and layout.
Global, type based numbering(rebar numbers are unique for each object type): Makes different exposure according to the element types (column, beam, slab, etc.) in the project.
Story, type based numbering (rebar numbers are unique for each story object type): Makes exposure of the stories themselves.
Drawing based numbering (rebar numbers are unique in each individual drawing): it makes exposure of each created sheet in itself.