Adding a Timeline to my Dashboard|Dashboards & Charts|Excel Forum|My Online Training Hub

Hello!

I have created a simple dashboard with 5 charts that tracks calls to our member service center -- and compares one aspect of the calls -- how many of the total calls received are related to my department (eServices)?

Now that I have a good amount of day's data, I'd like to add a timeline filter to focus on pieces of the information month / quarter, etc.  However, I keep getting two errors :

1. "We can't create a Timeline for this report because it doesn't have a field formatted as Date." (I believe it does); and

2. "No data connections in this workbook."

Is it possible to add a timeline without starting over?

Thanks so much!

PS.  I dramatically reduced the # of days in data set as the file was very large.  Hopefully this abbreviated file will suffice to illustrate my questions.