Stapled securities are where two or more separate securities are traded as a single entity. Typically they're things like listed trusts where one security might be the units in the trust and the other security shares in the management company.
While I believe the tax treatment of them has to be separate, from a buying and selling point of view, you can treat them like any other share.
It could be after 12months of listing the stapled security might split into an ordinary share + an option to buy an ordinary share at the original issue price.