What you need to know is the market update of products available and not the license.
The priorities are MPF, EC, employee benefit products including medical, travel, retirements and personal accidents on group basis. Sometimes, HR has to take care Office comprehensive insurance, motor car, public liabilities, pleasure craft, Director's Liabilities and others.
The most important thing is that you must have some contacts with insurance people that can support you whenever your boss wants to know something in a hurry.
Again, even you pass in licensing but without a sponsor, you need to re-take the licensing exam again after 2 two years.
However, you can get information simply from agents, brokers or even from the web search of insurance companies. All of them can supply the information you need within a few hours.
參考: My professional experience in this industry over 30 years