On the Proposal editor page, click on the 'Settings' option, where you will find the option to show and hide the page number option.
If you want to hide your page number, uncheck the 'Page Number' option and click on the 'Save Changes' button to save your result.

If you want to hide your page number, uncheck the 'Page Number' option and click on the 'Save Changes' button to save your result.

Updated on: 10 / 08 / 2021