How to add a tool tip for column headers

Hi, I have a matrix visual which has lots of measures put in it as values. 
Now, for every column, I have measures created and used in the values field.

What I am looking for is that if I hover on any of the column headers, ther should be a description coming up for that column in a tool tip.

Eg: If I hover on "Sales" column, I should see "How were the sales in the selected period?"

If I hover on "Price" column, I should see "How were the ratings in the selected period?"

Is there any way to do this?

I tried adding the description in the column name like "Sales (How were the sales in the selected period?)" and then adjusting the column to only see Sales but that doesn;t look very tidy. Do we have a better approach?

Regards,

parry2k MCMcMax Cmcmahan Re: Power BI Learning