To make outbound calls you can navigate to a contact record that has a phone number saved
NOTE: if no phone number is saved then you will see a grayed out call button on the contact record
Tap on the call button
You'll see a page and a dialogue that has the option to Call or Cancel
NOTE: You may notice that the phone number that shows up on the outbound call is different than your contact's phone number. This phone number is your routing number that makes the call to your contact's phone number using your Keap Phone number.