Concatenate Labels in Waterfall Charts?

Hello,

I have two visualizations:

• a line and stacked column chart
• a waterfall chart

Both show the date (year, quarter, month) in the x-axis. The line and stacked column chart gives me the option to disable "concatenate labels" under Format and x-axis. The Waterfall chart does not give that option. Do I have to change my data in any way so that I get the option to disable, or is that simply not available in Waterfall charts?

 I would like to show the date format in the x-axis as in the upper chart (stack). 

Thanks for your answers!!