Yes, you can. If you sell your shares for more than what you paid for them. Or if you buy more shares at a discount. But that’s not the point of the auctions. They have not been designed with share trading in mind.
Property is a medium to long-term investment. The investment term for the various property investments is between 5-7 and in order to generate the maximum returns (Maximise capital growth and get all the rental dividends) investors should stay in for this period.