By enabling content lockdown, restrict non-Admin users from editing templates and/or campaigns. Users will not be able to: share, clone, edit, or delete content. They also won’t have the option to archive templates.
Users will still be able to edit the content of an email at the time of sending, or when launching a campaign.
Click the gear icon and select Settings.
Under Admin Settings, click General.
Scroll down to Content Lockdown. Turning either slider on will disable your team members’ ability to create/edit templates and/or campaigns.