Look up in another look up

Look up in another look up

Evening
 
I have several applications for different pieces of information.
 
I have a candidate and seperate employer application, I have others but these are the main two. I am currently creating another application for assessment booking.
 
I would like to create a look up to pull thru the candidates name which is not a problem, but I am unable to pull thru the employer which has been selected in the candidate application, which has been entered in to the employer application.
 
Any suggestions on how I could do this? Withoutmerging the candidate and employer applications.
 
Regards