In both Finale and Sibelius, one simple and common way to separately control bar number size, location and frequency is to save off a separate copy of the final score as a Parts Score. However, while this is one way to achieve precise control, for bar numbers, at least, this isn’t really necessary, since both programs offer plenty of flexibility for displaying different bar number settings between the score and integrated parts.
Typically, bar numbers appear somewhat larger in the score than in the parts, and sometimes, bar numbers are bold or italic in one view, but not in another. As an example, for an orchestral pops chart or a film score soundtrack where a tabloid score and 9×12 parts are specified, bar numbers frequently appear nearly twice as large in the score as they do in the parts, and bar numbering may appear on every bar of both the score and parts, or on every bar in the score only, with the parts showing bar numbers at the start of every system.
Once you know where everything is, it’s quite straightforward in both Finale and Sibelius to create a separate score and parts “House Style” for bar numbers:
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