How do I use my professor account to invite students to open their own account?

To invite students to open accounts from your professor account:

Log in to Client Portal.
Click Client Administration on the left side and select Invite Your Students to Open a Paper Account.

How do I add an account?

I am getting an error "Submit of non-allocation order to master account XXX for sectype STK is not allowed". What should I do?

How can I transfer my TBSZ Account to IBKR?

I am a professor and would like to open a professor account. Can you email me an invitation?