Questions about example sentences with, and the definition and usage of "Saludar"

A: Se dice to greet, to say hello y también to welcome, depende de la situación
1) por favor acércate para saludar a Dono.

please come forward to greet Dono

2)Baja para saludar a nuestro nieto.

Come on down here and say hello to our grandson.

Y pasa lo mismo con to welcome

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A: My Spanish is not that good but I think this would translate as:

They called me to meet/greet some friends of my parents.

"Greet" is correct in this context but is not common in our culture. It is more likely they would call you to "meet" friends of your parents.
The friends would already have been greeted by the first person they met and after that they would simply meet the other members of the family.

A: Good morning

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A: "Hello, nice to meet you,
or
"Hi, it's nice to meet you"