Hello Kristian,
Thank you for your request. I have added the language on Pontoon. Have the three translators register in Pontoon, share their names so I can assign them to the the language and project. If you feel strongly one can be a leading role in this, we can make him/her the language manager. Do you want to be added to the locale too?
Additionally, are you going to onboard them to Pontoon, including sharing the training doc, etc? If you have more questions, you can send me a direct email, not using this mailing list.
Thank you,
Peiying