Problems changes default font

I have LibreOffice 6.3.2 on Linux Mint 19.2

I am trying to change the global font from Liberation Sans to Calibri.

I open Impress, Styles, Modify, Font tab, then change the font. However, it only saves for the document, when I close and open a new document the new font hasn’t taken effect, ie it isn’t a global change.

Where am I going wrong?

The styles will save the fonts for this particular document. You need to save the document as a default template to be used for new documents of this type.

Excellent! Thank you.