How can I change the main "page" that called "Pages" that appears above all the pages

[arkadi kaplon]

Hello.

How can I change the main "page" that is called "Pages" that appears above all the pages

[Nic Brough -Adaptavist-]

You do not, it is not really a "page", it's a structural element which acts as a container for all the pages in the space.  You need somewhere to keep them, and Pages is the container Atlassian have written for it.  As it's not a page, it's not editable.