The convention center's main auditorium has been ___ to provide an optimal view of the stage for all guests seated in the premises.
… "relocated" does mean "moved to a different place", and so, if the auditorium itself has not been moved then the term is incorrect. However, the stage itself may have been relocated inside the auditorium to provide better viewing. Otherwise the auditorium may have been "reorganized", "redesigned", "reconstructed","revamped", "altered", "adjusted", "transformed" etc.
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