# Weixin Mini Program Business background function explaination
The merchant back-end provides Weixin Mini Program merchants with functional modules for fund management, promotion management, and order data, allowing merchants to set promotion requirements flexibly, and help merchants find suitable influencers for promotion.
# Fund Management
Supports merchants to complete financial processes such as commission upkeep / refund / billing in the background, and supports viewing commission expenditure details in the background.
# Extension Program
Promotional commissions can be set in the merchant's back office for items that have been added through custom components and on the shelves.Please refer to < Weixin Mini Program Alliance Operation Specification for non-promotional product categories. When a merchant needs to focus on promoting a hit product or a certain category of goods, the commission ratio for a specific product or certain category can be set in "main commodities." For specific commission settings and calculation rules, please refer to Weixin Mini Program Alliance commission calculation rules .
# 1. Main products
It is suitable for day-to-day promotional scenarios for the main product. The league will recommend commissioned goods from the main promotion program to the corresponding tweeters, and merchants can find potentially good cooperation targets by analyzing promotion data.
# 2. Targeted programs
Supports merchants to set promotional commission rates for designated tweeters that are different from the main promotion plan, and after the merchants review and pass the registration of the tweeters, they will settle the product promotion according to the targeted commission rate.
# Order data
Orders generated by promotion (orders successfully paid by users) will be displayed in the Order Data module, which contains information such as order number, user payment time, product information, tweet information, commission and commission settlement status.