I'm good at this!<br><br>
Make sure you have a plan (usually company procedures) and just follow it. Something like start with a talk (note the date and the conversation somewhere), follow my an email, with HR cc'ed. If that doesn't work, just work with HR on the next step.<br><br>
You must follow procedure, I think, to make sure not to play favourite.<br><br>
Formality has its place in work relationship, and it's an important place.