1. Click Admin.
2. Select Mobile Apps.
3. Select the desired mobile app.
4. Under Push Access Type, select iOS and click Configure.
You will need a Certificate and Password from your mobile apps developer. The developer receives these by logging into the Apple Developer Member Center, setting up and downloading a push notification certificate for your app, and exporting the content. The developer sets the password when making the export. IMPORTANT: The certificate should be appropriate for the kind of environment you're using — Sandbox or Production. Verify this with your Marketo Admin or mobile apps developer.
5. Select your Certificate, enter your Password, and click Save.