t going to be an emotional moment for

hm...personally I would say something like this:

"It is going to be an emotional moment when saying goodbye to xyz..."

it It's going to be an emotional moment for to say saying goodbye to xyz
Or: ... when we/I/you/... say goodbye to ...
CJ

Hi guys,
You could also say
"Saying goodbye to xyz is going to be an emotional moment."

Best wishes, Clive

That mean.. if i use we/I/you/us/them. .. it is going to be
"going to be emotional moment for us saying good bye?"
or
"Going to be emotional moment for us to say good bye?"

when we/I/you say goodbye
means
when we say goodbye
or when I say goodbye
or when you say goodbye.
You will have to choose whichever makes more sense in the context you are setting up.
CJ