Gravity forms is very powerful and allows you to do many things which are manual and prime to be automated. Often, though the forms get cumbersome because there are so many boxes to fill it! This list tool will help you to get the display under control and have your information set up in a tidy order. Click on advanced and then list: 

 

Click enable multiple columns if you need them: 

 

Click apply dropdown to which ever column you wish:

 

Add your column and dropdown text: 

 

Your form will now have a row that has multiple columns and dropdowns.  If you click the plus sign you’ll get a new row.