Own two units but need more parking

 Hi all,

We currently own two units in the same unit block (both privately owned under the same names). We live in the 2 bedroom/1 carpsace, and rent out our other 1 bedroom/1 carspace.

We have acquired another car and now really need 2 carspaces. What would be the process (if we can) to allocate the rental property carspace to our 2 bedroom unit? We would concider doing this at the end of the current lease, then possibly selling the rental as a 1 bedroom/0 carspace. Can we do this and what would be involved if so?