Final answer:
To upload your 1583 form to your iPostal1 account, sign in and navigate to the 'Forms' section. Then, upload the form from your device or computer.
Step-by-step explanation:
To upload your 1583 form to your iPostal1 account, follow these steps:
- Sign in to your iPostal1 account.
- Navigate to the 'Forms' section of your account.
- Click on the option to upload a form.
- Select the 1583 form from your device or computer.
- Click on the 'Upload' button to complete the process.
After following these steps, your 1583 form will be successfully uploaded to your iPostal1 account.