Default Directory for Libre Office

It seems that the default directory must be the same for all Libre Office applications. Is it possible to have a different default directory for Calc than for Writer, for example?

Besides an issue where recently the last used folder was the prefefined one when you go to SaveAs/Export (fixed for next version) you can work with as many folders you like.
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If you open a file from one folder, this should be the folder you see for SaveAs/Export .

As you have not told your version, maybe start here: