"Temu" may refer to the Temu department of Pinduoduo platform, which is a cross-border e-commerce platform that provides product purchasing services. Filling in the quantity of multipack items on Temu usually needs to be determined based on the specific information and sales specifications of the product.

If you are a seller and want to set the quantity of items in a multipack, you need to follow the steps below:

1. **Understand the product specifications**: First, make sure you know the specifications and quantities of each item in the multipack. This may be defined by you or provided by the supplier.

2. **Fill in the background**: In Temu's seller background, find the corresponding product management page and fill in the quantity of each item according to the combination method of the product. Usually, the system will provide a table or drop-down menu for you to choose.

3. **Check inventory**: Make sure the quantity you fill in does not exceed your inventory capacity. If the items in the multipack need to be shipped from different warehouses, make sure the inventory of all items can meet the configuration of the multipack.

4. **Update price**: If the price of the multipack needs to be calculated based on the number of items, make sure the price is set correctly.

5. **Upload relevant information**: You may need to upload pictures, descriptions and other information of the multipack to ensure that all information is accurate and attractive to consumers.

If you are a buyer and want to know the number of items in the multipack, you should check the description on the product details page. Usually, the seller will provide a list of the contents of the multipack, including the quantity of each item, on the product details page.

Please note that the specific operation steps may change as the Temu platform is updated. It is recommended that you log in to the Temu platform to view the latest operation guide or contact Temu customer service for help.