Question: In ArcGIS Pro 1.3.1, I have just looked for the ability to start legend items in a new column.

This functionality is present in ArcMap's Legend Properties on the Items tab which appears below:

[![enter image description here](https://i.stack.imgur.com/c9p84.png)](https://i.stack.imgur.com/c9p84.png)

Has anyone found the equivalent functionality in ArcGIS Pro, or know when it may be expected to appear?

It is not mentioned in the [Work with a legend](https://pro.arcgis.com/en/pro-app/help/layouts/work-with-a-legend.htm) documentation.

Nor does it appear on the `Element: Legend Item` pane (see below)

[![enter image description here](https://i.stack.imgur.com/ymFCz.png)](https://i.stack.imgur.com/ymFCz.png)

Answer: 
Using ArcGIS Pro 2.3.0, youu can select 'Legend Arrangement Options':

[![Legend Arrangement Options](https://i.stack.imgur.com/ivWIU.png)](https://i.stack.imgur.com/ivWIU.png)

Select 'Adjust Frame'.:

[![Adjust Frame](https://i.stack.imgur.com/wg2iS.png)](https://i.stack.imgur.com/wg2iS.png)

Then select the item from the legend that will go in a new column and return to the 'Element' settings, where a new option 'New Column' will have appeared. This functions like the 'Place item(s) in new column' setting in ArcMap:

[![New Column](https://i.stack.imgur.com/wv6g7.png)](https://i.stack.imgur.com/wv6g7.png)
In ArcGIS Pro 2.9, on the Format Legend/Legend Arrangement panel, select Manual Columns as the Fitting Strategy. Increase the number of columns if needed.

On the Contents/Drawing Order pane, the Column numbers appear with their layers indented. Drag and drop layers to move them to the top of a column.