they put people in the chart who already left company

Question

Is this sentence understood and correct

Answer 1

Here's a better version:  They put people in the chart who had already left the company.

 

By capitalizing the beginning and ending with a period, it's now a legitimate sentence.

Answer 2

The issue is that of the "misplaced" modifier.

An alternative:

They put the people who left the company in the chart.

Better still

In the chart they put the people who have left the company.