Conditional Formatting a Block of Cells Based on a Single Cell's Data

I have an excel workbook that I created for my employees monthly work schedules; in it I track their scheduled hours, actual worked hours, pay, overtime, etc.  I have already created a drop down list where I can select which position a certain employee will be working on a specific day and it will color code to a certain color for easy info dissemination.  What I want to do, and haven't been able to figure out, is how to format an entire day to shade red when I select the word"meeting" from the day of the week drop down list I have at the top of each day of the work week.  I can shade the cell containing the word "meeting," but i'd like the entire block of cells that make up that day to be shaded.

I tried using the following formula when creating a new conditional format rule: =if($b$1="meeting",b1:d10)

and, while some cells were formatted correctly, the majority weren't.

What I want is for the range b1:d10 to be shaded light red with dark red text if cell b1 contains the word meeting.