You may create click-to-call links in your magazine in the following way:
Note: It is assumed that you’re currently in the Editor workspace. For more info how to get there, click here.
Step1. Select the object you wish to link and expand the Link panel from the right toolbar.
Step2. Choose the Call option from the Type dropdown.
Step3. Add the phone number in the Link field.
Note: You may also add a tooltip to your object with a description or an explanation.
Step4. Save your page when you're done.