If you want to create a Poll but don’t want your students be able to respond to it until a certain time, you can lock the poll. This a great way to save time by creating a few polls before class begins and unlocking them at the appropriate times throughout class.
To Lock a poll simply click on the Lock button located on the right side of the poll
After clicking “Lock this Poll” your Poll will not be visible on your students’ page, and they will not be able to respond to it. The Poll will still be visible on your page but will have the text “(Locked)” next to it.
Once you’re ready for your students to respond, simply click the Unlock button, and the Poll will be visible on your students’ page, allowing them to respond to it.