...
Adding New Contacts
After clicking on the 
button, the User is presented with a data-entry form used to build a basic Contact: First and Last Name, Email, and Phone Number. Adding a new Contact here creates a new record in the Workers/Contacts section of the application.
Adding Existing Contacts
After clicking the 
button, a list of existing Contacts is presented. Contacts can be associated with multiple services. As such, this list displays all active Contacts in the system. Searching through this list and selecting multiple entries allows the User to add all the required contacts. Check each of the Contacts that need to be associated with the Service and click Save.
Deleting an Association
Selecting 
button from this Grid does not delete the Contact entry it merely removes the association.
...