The App icons on my iPad won't stay where I set them.
The screen icons on my new (to me) won't stay where I set them.
sorry this has been discussed before but I am new to the community
[Re-Titled by Moderator]
iPad Pro 12.9-inch, 3rd Gen, Wi-Fi
Perhaps this support page may be a good place to start:
Use the App Library and Home Screen to organize your iPad apps - Apple Support
Having reviewed the above link, if difficulties remain, hopefully you’ll be better able to describe the particular problem that you have.
Being new to the community, perhaps you are also new to iPad. The iPad User Guide is a rich source of frequently overlooked information about your iPad and iPadOS. The Guide is available both online using a web browser (such as Safari), or as an Apple Books download:
iPad User Guide - Apple Support
https://books.apple.com/book/id1567104892
The Tips App, installed by default on all new models of iPad, provides a brief introduction to iPad - and leads you to the User Guide. In case you missed it, here is a link to the Tips App:
https://apps.apple.com/gb/app/tips/id1069509450
Apple also has a huge YouTube Channel - containing videos and feature guidance: