[dottore]

Maybe I used the "inspect", because of my limited English. I meant to click on the stars and write down the needed data.

If I correctly understand your question, I don't think about hardening the way to get star position. In this first step, I want it to work.

Your job is reduced to choose your navigation object's, note the needed data, give this to the app. I think about triangulation and square operation in this start. If you make more triangulation you get more precise position.

I think, but don't know, in IRL they used actual navigation star data books based on the latitudes, almanacs, sun moon charts. They calculated position's with boards. Today we use math based apps to get this job done.
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We can limit our options in Stellarium if somebody understand the Stellarium programming language. But if you limit, you need a tool to extract this data.