The sponsor is applying not the applicant.There are waiting periods for newly arrived migrants regarding accessing Centrelink benefits:
"Encouraging Self Sufficiency for Newly Arrived Migrants (2017-18 MYEFO)
"From 1 July 2018, pending the passage of legislation, the Government will extend the Newly Arrived Resident's Waiting Period (NARWP) for a number of welfare payments.
"The measure will increase the existing NARWP for working age payments, such as Newstart Allowance and Youth Allowance, from two to three years."