[Koha-translate] Koha translation for Greek

Hi all, I would like to ask if someone can provide us access to manage Greek translation because we try to translate the terms and the system on pootle ony allow us to suggest but not to approve the translation and because of that we have as greek provider of Koha many problems. On some installations we change the po files internally in order to be the translation on right way. Could you please explain me how I can gain access on that ? I ask previous greek translators and they suggest me to ask here. Best regards, George Veranis