To do this, when you are in the creation part of our software, right-click with the mouse, then click on Number the pages.
The numbering then appears and to customize it simply click on it.
You can change the font, size, color and even add a background to better visualize your page numbers and all this thanks to the toolbox.
You can remove the numbering at any time by right-clicking with the mouse again and then clicking on Remove numbering.