In the credit card application interface, there is a button to apply for a supplement. The specific method to find the supplement function is as follows:

1. Search Bank of Communications on Baidu, find its official website and click to open it.

2. After entering the official website, click on personal business and click on the credit card application button in the options that appear.

3. Click on the platinum credit card activity picture on the page that appears.

4. After the page jumps, click Credit Card Application on the menu bar, and among the options that appear, click Apply for Replacement.

5. After the page jumps, enter your personal ID and click Submit. The supplementary ID card function will be uploaded in this window.