How can I add a new menu in the sidebar, create a new page with routing, and get data from the submission table and show on this page with a date filter in the admin panel
This would likely involve some extensive customization. Which version are you working with (e.g. 3.4.0-5) - please include this in your posts as it is relevant for these types of questions.
-Roger
PKP Team
i am using version 3.3.0.6
A post was split to a new topic: Help with customization