We currently support modifying the number of columns of the Live Wall widget through our CSS Editor. 

In your visualization go to Custom CSS option and click on Add

Within the CSS editor add the following snippet:

.widget.live-wall.live-wall-v1 .mention-container {
    width: 24%;
}

Change the width percentage value until you get the number of columns you need. See some example:

• 1 column, use 100%
• 2 columns, use 49%
• 3 columns, use 32%
• 4 Columns, use 24%
• 5 columns, use 19%
  
  

After applying the code you will notice, depending on the width percentage you used, that the number of columns has changed: