Customer information (orders, bookmarks, shopping cart) is just a necessary module to see who is buying or just registered
It will help you see statistics for the selected customer , especially if you want to purge customers

demo-demo/demo

Sales statistics:
Total orders
Number of products
The total amount of sales
Sort
Pagination

Viewing bookmarks:
Number of products
Sort
Pagination

Viewing the bucket:
Total products
Number of products
Shopping cart
Sort
Pagination

In each tab there is a sorting and pagination

The module does not replace engine files
Separate folder with output of the controller model and templates
Minimum edits in the Vqmod file

Tested on Opencart 2.1 2.2 2.3 3.0. x

Installation:

Select the version you need
Install via the ocmod installer
Update modifiers
Set viewing rights in System-users - user group - select customer_expert - Save

Good sales to You