Any user can be added as a survey admin. If you make a non-super admin a survey admin, it only gives them the ability to see and manage that one specific survey. It doesn't provide them with access to any other admin-only features.
Survey admin responsibilities include:
Editing the survey
Create or edit questions within the survey
Learn more about additional survey admin permissions in Survey Admins and Engagement Suite Permissions.
Note: You can add survey admins to active and ended surveys.
Navigate to Admin > Engagement > Surveys.
Enter a survey from the Surveys list.
Select Settings > Edit Settings.
Enter Survey Details
Under Survey Admins, search and add the user(s) you'd like to give survey admin permissions to.
Select Save & Continue.
Survey admins will be able to view the surveys they have access to by navigating to Admin > Engagement.