Gittin 65 - July 20, 2 Av

There is halachic validity to various acts of children depending on their level of maturity. There are various stages mapped out in the Gemara for different acts. A minor however cannot appoint a messenger. If a man or woman appoints a messenger to deliver (man) or accept (woman) the get and specifies a location, if the messenger does it in a different location, is it valid? Does it depend if it was the man or the woman's messenger? Does it depend on how the request was worded? If a woman appointed a messenger to accept her get, from what point is she not allowed to eat truma in the event that she was married to a kohen? What types of commands would be clear that a man intends to send messengers to write and deliver a get?  Which wording does not indicate such?