The guy who ran it before had a queue of people outside.

The guy who ran it before had a queue of people outside.
The guy (who ran it before )had a queue of people outside his office waiting for decisions on everything from taking a day's holiday to major investments.
请问这里为什么要用ran(跑)呢?
再者,能否分析一下句子的是怎么拆分的呢?