NSW Probate and Deceased's Wishes - How To Record on Property Title?

[Michael Mihajlovic]

A Testator leaves a property to his niece (probate granted) with the condition that his brother and sister in law (her parents) can have the property for their sole use and enjoyment for the term of their lives.
How is that recorded on the title deed?

 

[bluetongue]

The NSW LPI Registrar General's directions describes how life estates are documented on title. See Life estates - Registrar General's Directions