How can I create IB sub/linked accounts?

Step 1: Login IB web portal. Click on the profile icon on top right then click 'Settings'

Step 2: Under the Trading section, click 'Open an Additional Account'.

Step 3: Select "Individual"

Step 4: Click 'Finish Application'

DISCLAIMER: The following screenshots are taken from Interactive Brokers website, provided only as a setup guidelines, and may be changed from time to time subject to Interactive Brokers discretion. Piranha Profits Pte Ltd is not responsible for any loss or damages caused by inaccuracy and misrepresentation of the information.