Here is how you can find a template in LibreOffice:
1) From the Menu bar, choose File > New > Templates. You can also click on the small arrow next to the New icon and select Templates, which will open the Templates dialog.
2) Select the category of template you want to use from the list at the top.
Avery does not currently offer the .OTF template type. However, our downloadable .doc templates for older versions of Microsoft Word work well with OpenOffice and LibreOffice. Avery Design & Print Online is a great solution for OpenOffice and LibreOffice users. Visit avery.com/templates to find a template or to use Design & Print Online. We also do not offer the .ODT (OpenDocument) template type.