I found a link about this and tried to follow it but i couldn’t find the “background” tab
https://help.libreoffice.org/Impress/Changing_the_Slide_Background_Fill
I found a link about this and tried to follow it but i couldn’t find the “background” tab
https://help.libreoffice.org/Impress/Changing_the_Slide_Background_Fill
What is your version? On 5.3, it’s Slide
-Slide Properties...
or simply Slide
-Slide Background Image...
Oh, sorry. You gave a link for Impress, but your question is tagged Writer.
It’s Format
-Page
-Area