From the Ballot Page select Yes or No as the "Position or Question Type". You could also use the "Referendum or Polls" option; you just want to ensure that your voting system is set to "Plurality".

Add your Question Title and Choices from the pop-up window.

Then add your slate by selecting "Add question information", and input a list of the candidates on the slate:

You can also include additional information, or additional instructions, in the "Voter Instructions" box, underneath the "Settings" bar.

Use the rich text editor to format your text if needed.