How do I install label extentions
Here you find the extensions and explanations: http://extensions.libreoffice.org/ Please look here for the extensions (labels) you need or want.
Help wiki is here: Extension Manager - LibreOffice Help
In LibO: Tools > Extension Manager >…
First you have to get your extension packed properly in a .oxt file .
Every .oxt extension should be installed the same way:
‘Tools’ > ‘Extension Manager…’ > click button ‘Add’ > choose the .oxt file from the file system tree > Fill in prompts as needed.