Splash has it right.
The old doctrine was Jesus turns up in 1914, does an inspection and then appoints the FDS over all his belongings.
New doctrine is Jesus turns up in 1914 appoints the Governing Body in 1919 as the FDS before they exist, and then at some point in the future appoints them over all his belongings.
From Jw.org
When Does Jesus Appoint the Slave “Over All His Belongings”?
Jesus said that the “master on arriving” (literally, “having come”) will appoint the slave “over all his belongings.” When does the Master, Jesus, arrive?
The expression translated “on arriving” is a form of the Greek word er′kho·mai. Verses 42 and 44 of chapter 24 translate a form of er′kho·mai as “coming.” In those verses, Jesus is referring to his coming as Judge during the great tribulation.—Matthew 24:30; 25:31, 32.
Jesus’ appointment of the “slave” over his “belongings,” then, must also be a future event. He will make that appointment during the great tribulation.
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This provokes the question, if the GB are only appointed over all Jesus belongings at the Great Trib, then who are Jesus belongings today that the GB are not currently appointed over?
Turns out it's the 'messianic kingdom' and the angels. So the current GB are appointed over the Angels at some point during the GT. The other annointed are also appointed over the angels when they are in heaven. So the FDS becomes all the 144k when they're all in heaven.
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This new doctrine is very poor.