Spanish term (edited): se gestionará el ingreso oficial

In my opinion, translating "se gestionará" adds nothing to the sentence if included in the English, so why bother? If an organization is going to become an official member of another body, it's obvious that the process will be "managed" or "arrangements will be made" or whatever.

Leave it out, I say:

“Se gestionará el ingreso oficial de la Organización a la Red Regional de Aliados.”

“The organization will officially join the Red Regional de Aliados.”
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(Btw, I deliberately left "Red Regional de Aliados" in Spanish above because a) you haven't asked about that term, and b) I don't know how you're translating it)

Hope this helps.