Go to the Todoist integration’s listing in the Zendesk marketplace.
Click Install.
Select the organization you wish to install the app for in the dropdown menu.
Click Install again.
A new page will open. Click Install again.
You’re all set! You’ll now find the Todoist icon in the sidebar when viewing tickets in Zendesk.
Note: In order to add the Todoist app to your Zendesk organization, you’ll need to be an admin.