Complex sentence: Setting pins and tee markers is the one part of the job that sets greenskeepers apart from all other groundskeepers and horticulturists-otherwise, most groundskeeping tasks are nearly the same.
Split into simpler sentences: Setting pins and tee markers is the one part of the job that sets greenskeepers apart from all other groundskeepers and horticulturists. Otherwise, most groundskeeping tasks are nearly the same.