revision of the online store Sakhalin.store

Terms of Reference
Required specialization: CMS Programmer Bitrix (Bitrix)

Introduction:
There are two operating online stores based on CMS Bitrix with 1C integration, acquiring system and custom delivery system.

TASKS

Shop i65.shop:
Reconfigure acquiring and online CCP:
Acquiring: register the changed authorization data in the system
Online CCP: Change Integrator Settings from XML File

Shop Sakhalin.store:

1. Minor edits to the Bitrix website template:
Fix block layering in the mobile version, you can flex
Replace images on jump buttons
Reconfigure partitions

Development of the sellers personal account with separate product catalogs:

User group (Seller) with a separate personal account
In the personal account, the seller must manage the range of his goods, form groups in the catalog of goods, accept, confirm or cancel orders.
Link an order to a seller (Seller orders should not be displayed to another seller)
Adding a new seller should display a new category with the sellers name in the existing product catalog, and within this category, the sellers products should be displayed according to the hierarchy:

Directory hierarchy:
Main Site Directory => Seller List => Seller Catalog => Seller Product Groups => Seller Products

Encapsulation. The seller can manage only his product, without having access to the goods of other sellers and site settings
Unloading the goods and adding the seller should be seamless, without suspending the site.
Add the ability to pay for the order only in cash or by card to the courier for certain sellers. Management of this functionality should be only with the site administrator.
Inside the shopping cart, the goods should be divided by sellers: