I have a custom style (in calc) I want to be included in every new document I create.
How do I do that?
Create a document (empty) with that style included (or Default style modified if it is supposed to be applied to all cells if not specified otherwise) and save the document as template, File → Templates → Save as Template. Then go to File → Templates → Manage Templates, Filter for Spreadsheets, right click that new template and choose Set as Default. New spreadsheet documents from then on will be created from that template.
There is no File → Templates
Under file->NEW there are templates. Pre made templates.
Not what I was looking for.
I want a new default template
There is in LibreOffice Calc v.7.1 and v.5.0.
No idea which version (and which app) you are using.
And your post is not an answer; I wonder what causes people to type questions and comments into “Propose Your Solution” box.