When it comes to your contacts, we have address, phone numbers and email addresses. Each of these have a type associated with them.
Click CRM on left main menu
Here you will see Contacts List
Inside contact have Email, Phone Number and Addresses
To Add Contact information
Click
click Type and choose one from below
Click Add
click Type and choose one from below
Click Add Email
click Type and choose one from below
To customize these Settings
Click Owner Settings
Click System Settings
Click Action Date Types
All three of these get modified the same way
Click the one you want to customize
Let's look at Address Type
Here you can see all the different address types we can choose
Click here 
to edit an existing type
to edit an existing type
Click here
to Show Inactive Types
to Show Inactive TypesChick here 
to create an Address Type
to create an Address TypeWhen done click update
following the exact same process and that’s how you modify phone email and address types