Remove slide numbering in a master or slide layout in PPT 2019

You want to remove slide numbers from a master or even a particular slide layout ? Here's how.

Go to View - click Slide Master - select the master (top thumbnail) - click Insert tab on the ribbon - click the Header and footer button. 

In the dialog box remove the check in the box for slide numbering, then click the Apply button. This will remove slide numbers on all the slide layouts belonging to that master. If you have other masters slide numbering will not be removed. Close the master view by clicking on the Close Master view button.

If you want to remove the numbering for a particular slide layout follow the same procedure. Of course only select that particular layout in the master view click Insert tab on the ribbon - click the Header and footer button remove the check next to slide number and choose Apply.

Finally go back to normal view by clicking on the Close Master view button.