Howdy,
For a first start I'd recommend you grab a copy of the Writer Guide (6.0 is
the latest of today) here:
https://documentation.libreoffice.org/assets/Uploads/Documentation/en/WG6.0/WG60-WriterGuideLO.pdf
Jump to Chapter 21 which covers basics of how to customize both menus and
toolbars.
If
Hello Libreoffice Writer experts
I want to create some functions of Libreoffice Writer (such as Labels,
Bussiness Card, Templates) in File->New sub-menu to add into my own
sub-menu in File menu. How can I do it?
Thank you so much!
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LibreOffice