Before adding the parcel, you have to bind the MYPOZ account with MYPOZ WeChat, please refer to: How to bind WeChat account?
Step 1: Click "My">>> Member Center
Step 2: Click Add Parcel
Step 3: Fill up the parcel details
Step 4: Choose the extra parcel services (If required)>>> Submit
Step 5: Adding successfully>>> Can close/ Move to the order page