how to hide approver presentation on creation of work item
One answer
The property "hideIfCreation" is a presentation property, and you cannot use it with a section.
https://jazz.net/library/article/130
You actually asked a question that has been asked many times here, but in a slightly different way.
https://jazz.net/forum/questions/52063/hide-a-tab-on-work-item-editor-presentation
https://jazz.net/forum/questions/212820/how-to-hide-tabs-and-sections-in-workitem-editor-at-particular-state-of-workitem