In the stock game I don't know, but in TWoS:
As optional TWos mod you load the
TWoS UI cmd_Radio Reports_Auto Target ID
If you play with Manual TDC:
On your optics, you select target, ask weapon officer to follow target; then ask WO to identify target, it's the first icon on the left in the series of icons.
If you play with Auto TDC:
On your optics, you select target, ask weapon officer to follow target; switch off Auto TDC (click on the guy's face); then ask WO to identify target, it's the first icon on the left in the series of icons. Then undo the follow target and switch back on Auto TDC.
A lot of steps, isn't it?...
Hope this helps,
Cheers,