You are given a monolith which serves as a tool/habitat/dimensional gateway/ship. Your job: to create a star.
The monolith can create any quantity of any element you need, but only one at a time. The monolith can be made larger or smaller as needed, but too large and its mass may interfere in your work. FYI.
The alien race that gave you the monolith sets you up in a sector of space that needs development. "Make us a nice, yellow star, please. And do try and not go overboard on the time-dilation."
So....how do you go about it?
>>8967397
Just dump hydrogen out until I have roughly a star's worth.
>>8967409
Good. Now the aliens would like you to manifest some sort of butt.