Hi
The answer is: NOTHING will replace this.
The solution is: revert to "classic/legacy" outlook and stick to it.
This version will be out there for a while. Menu. Top left corner. Outlook. "Legacy"
That's what hundreds of other users are doing. Ask your admins to let you choose since Microsoft allows this switching. When switching: never answer "yes" to the message "free space by deleting the backup files of the legacy version..." otherwise you can't switch back anymore.
I keep on switching into the "new" version and check-out, if this feature has been added, but I'm confident it will never be.
best