Instructors can modify the Polls tool permissions to allow students or other site participant roles to post and manage poll questions.
Go to Polls.
In the target Sakai site, select the Polls tool from the Tool Menu.
Select Permissions from the actions menu.
Modify the permissions for the roles listed.
Check the box next to each permission you would like to allow for a given role. (Deselecting a box will remove the corresponding permission.)
Note: You may see different roles listed depending on the roles that exist in your site. A role must be present in the site in order for you to modify its permissions.
Select Save to save your changes.