Some agencies will want to specify a primary office contact. This is the main contact for public inquiries. It can be a centralized support contact or the Service Desk number for the agency.

First, add a new contact. Go to the content menu. Then, choose "add content." You'll see the contact tab there. 

Then, in the Agency Settings page, specify that contact as the Primary Contact.

The social media icons in the bottom left-hand side will update from that Primary Contact's social media links.

Site Settings, Agency Settings, choose a Primary Contact

Go to Site Settings, Agency Settings, and specify a desired Primary Contact from the list of available contacts

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How to add Phone numbers to Contact

If you are trying to add a phone number to your contact page make sure within the top field "Primary Phone Number Type"  make sure to add if it's an Office or Fax or Primary contact. You don't add the actually number within that field

The field below it that says "Primary Phone Number" will be where you can add the contacts actual number.

Adding a number to a contact type