Greenberg appointed Yates over Roz Welch, who is also campaigning for the job and already works in the clerk's office.
Jefferson County Clerk Bobbie Holsclaw said the new technology should reduce wait times with fewer people having to come into the office.
The final countdown to Election Day is on as candidates made their final pitches to voters on Monday.
Election officials are reassuring voters after a Laurel County, Kentucky, woman posted a video that appeared to show the machine's touchscreen not accepting a vote for Donald Trump.
All branches have been closed since Monday after a ransomware attack.
Jefferson County Clerk Bobbie Holsclaw has said no personal information was compromised in the attack.
Some county clerks said the new system is costing money and time, along with adding stress.
They said since the change, they’re losing customers and thousands of dollars in revenue.
Clerk Bobbie Holsclaw said the caller tells people they have past due or owe back taxes before asking for sensitive information.
Previously in Kentucky, license plates would go with the vehicle if selling or trading it in.