LibreOffice 24.8 Help
When you first start a Open or Save dialog, LibreOffice displays your working directory. To change this first directory:
Choose - LibreOffice - Paths.
Click My Documents and click the Edit button, or double-click on My Documents.
In the Select Path dialog, choose the work directory you want and click OK.
When you change to different directories in Open or Save dialog, LibreOffice will display the last directory used.
You also use this procedure to change the directory displayed by LibreOffice when you want to insert a graphic. Choose - LibreOffice - Paths - Images, then follow step 3.