The materials of the database are available to the user in the Database dialog. If no materials are available, you have to set the location of the database file, see Configuring the material database.
Select Settings > Materials to open the Materials dialog.
Click on the Database button.
Select the material you want to transfer to the local database and click on the
button.
Click on Apply to save the changes and keep the dialog open.
or
Click on OK or Apply and Close to apply the changes and to close the dialog.
Materials copied to the local database will be available simultaneously in the list of materials in the Materials dialog and in the list box in the tool bar of the main window.