I have created a SharePoint list which includes multiple drop down columns. What I need to do is when I select a item from the first drop down column (which is a look up column) the second drop down column should show options only related to the value in the first column. I am using SharePoint 2013 online version. Is there a possible way I can do this?
You can use SPServices Cascaded Dropdowns, thanks to Mark.
There is another option to use InfoPath to customize the form.
You can follow the similar post below: