Left to right
Jennelle, human engineering officer
T'Pur, vulcan science officer
Me, tactical officer
Jadzia, human science officer
Sikumi, vulcan tactical officer, now Lt.
(not pictured) Holly, human tactical officer
The tall one is a tree-man and the short ones are rock-women. They come from a living planet.
(I do have names for all of this but can't recall atm)
These 5 from the living planet were unusually interested in tinkering - not normal for this backward planet. They received permission to enter the academy, and refit an old derelict Connie, and added a rematter converter to it - and were given the assignment to take her out and see if it met its Muster.