Default locations (Libraries)

In Audacity 3 Preferences, there is a tag “Directories” which allows the default locations for Open, Save, Import and Export to be defined. This is not currently available in Audacity 4.

Also the default directory is placed under /Documents, I would prefer it to be under /Music because of the sheer number of files and folders that I already have in the documents folder. Without the ability to define the preference as above, how can I change this?