Hello Mamatha,
A similar question was asked and answered here:
https://community.mendix.com/link/space/studio-pro/questions/121025
However, i would advise to duplicate the page template and adjust that one, so you will not lose original app module files and these are not getting overwritten after an update of your app module later on.
Hope this helps,
Good luck!
Hi,
Go to the properties of the page and find layout name used.
Go to the layout, you will find logo, there you can add or remove