IPhone 13，ios 15.4，Tik Tok 2 1.0.0。

1. First, open the Tik Tok application on the mobile phone, as shown in the figure.

2. After opening Tik Tok, go to Tik Tok app homepage and you can see the playlist of videos. Click "I" in the lower right corner to enter the Tik Tok Personal Center, as shown in the figure.

3. After entering Tik Tok Personal Center, click the button in the upper right corner to enter other function settings of Tik Tok, as shown in the figure.

4. Then click "Settings" in the pop-up menu to enter the system function settings of Tik Tok, as shown in the figure.

5. After entering the setting function of Tik Tok, select "Commodity Sharing Function", as shown in the figure.

6. You can then apply, but you need to meet three conditions, as shown in the figure.