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If you mean in the construction phase, well, first, all the details should be examined carefully in the detailed design phase and all the problems solved. Knowing exactly what they are, you should arrange enough meetings with sub-contractors so they understand all the details and what are the problems, you should ask them to hire as more workers as possible with a maximum daily work hours and try to overlap tasks at the same time, but be careful of making the site more crowded than possible.
These two points are important if you have to finish really quickly
