HARM TOO Mode - “Handoff”...to what?

[Brass2-1]

I recently have been getting back to basics with SEAD in a hunter-killer format, to include using HARMS and practicing SP and TOO employment, as opposed to pre-briefed. 
 

While I’m obviously aware of the “lock” function that we use the cage/uncage Handoff for currently, it’s led me to wonder whether this should provide an Azimuth-only target “track” to the FLIR or perhaps the radar?
 

At present I can and do use the HARM target box in the HUD paired with manually moving the target designation of the ATFLIR or Radar to build a solution/observe at range. 
 

I’m surprised that there isn’t such a function in the real jet, and the “Handoff” terminology also adds to my suspicion. Does anyone have familiarity with this function-or lack there of?

 

Edit - if this function is present and I’m missing a way to perform this handoff, I’d love to know that as well. 

[Hulkbust44]

So the term "handoff" refers to the transfer of target selection data from the aircraft weapons system to the weapon. The Hornet's ASPJ and RWR are interlinked with the HARM.

Afaik there is no function to slave sensors to the targeted emitter.

Mobius708