Authorised Person means the person (if any) described as your authorised agent in the Application Form or another person notified by you to us under clause. No restrictions for authorised persons (since they can only trade the account and not deposit or withdraw).
FYI about the Authorised person and the activities that they are allowed to perform
It depends on what the client and the authorized person have agreed to. It should be clear from a note on the user or a form filled out - in this case none has entered that detail so I'm guessing the client added it under their profile here
If the client added it here, then it would likely be that they can trade, discuss the account, make account settings changes, make withdrawals (but only back to the account of the actual client) - they can't withdraw to their own account)
It's generic in this case, but in other cases someone might just want to authorize trading by another party (but not withdrawals for example) - in which case they should probably have a form on the user showing that authorization