You have to add the options, that members can vote for. 

After setting up the Vote tool, the following window appears.

Add a new option

1. On the main page of the tool, click on 'Options' to view the existing options. 
2. Add options below the existing options, here you can also modify them. 

When finished, click on 'Save'. 

Delete options

To delete an option, click on the X next to it.