The Voting feature is controlled through the Entry Editor's Assembler feature. You can turn it on via the gear icon located in the top-right corner of Assembler or by clicking on Assembler > Voting.
Enable upvoting/downvoting
If enabled, each particle can receive 2 types of voting: upvoting (favorable) or downvoting(against).
Upvoting and Downvoting on Article Page
Upvoting and Downvoting Disabled
If not enabled, each particle becomes an option to be selected. In the live version of the post, a Submit button will be added for the end-users to confirm their choice.