Remove Appian logo and Process HQ webpage from Site

Certified Associate Developer

Hello,
I am using Appian version 24.3, and it's a licensed environment and not community edition. I have three different environments available - Dev, Test, and Production. I am currently working on the Dev environment. I want to remove the following Appian default components from my Sites.

1. Appian logo on the top right corner which has "Powered by Appian" as tooltip text. It was removable in version 23.3 but I don't see any option in the newer version. I am aware of the option to add custom logo (it is on the top left of the site), but it doesn't remove the Appian logo.

2. 'Process HQ' webpage from the navigation list. I want to remove it for all users.

I have attaches an annotated picture of the UI below.

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