I don’t know any ashramite personally.
There is generally no such arrangement for a week-long volunteering since one needs to learn the work first. It will be better to come and stay first and spend your time by the samadhi, join in the collective meditations, sit in the Ashram library and read, visit the Ashram departments, especially Sri Smriti, SABDA, Auroshikha, Senteur and the Ashram Playground to get a feel of the Ashram life.
You should book in one of the Ashram guest houses such as International guest house, Cottage guest house, New Guest house, Park guest house or, Samarpan for your stay.
Affectionately,
Alok Da