OWA 2013 watchdog system errors for Lync 2013 -

Question

OWA Farm is configured on two 2012 servers. Lync 2013 installed on server 2012 as well.
I can access all services, internally and externally without issues on the client end.
However, my OWA farm machines are marked as Unhealthy per get-OfficeWebAppMachines.
The OWA Farm system Logs show multiple events related to source Office Web Apps Monitoring, event ID(s) 1004, 1010, 2004, & 2010.
What are the BroadcastServicesWatchdog_Wfe & AgentManagerWatchdog that are running, reporting these event codes, and where can it be managed?
The actual event codes
1004:
<?xml version="1.0" encoding="utf-16"?>
<HealthReport xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <HealthMessage>AgentManagerWatchdog reported status for AgentManagerWatchdog in category 'Recent Watchdog Reports'. Reported status: Machine health is Unhealthy</HealthMessage>
</HealthReport>
1010:
<?xml version="1.0" encoding="utf-16"?>
<HealthReport xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <HealthMessage>BroadcastServicesWatchdog_Wfe reported status for BroadcastServices_Host in category '3'. Reported status: Contacting Participant.svc failed with an exception: The remote server returned an error: (404) Not Found.</HealthMessage>
</HealthReport>
2004:
<?xml version="1.0" encoding="utf-16"?>
<HealthReport xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <HealthMessage>AgentManagerWatchdog reported status for AgentManagerWatchdog in category 'Recent Watchdog Reports'. Reported status: Machine health is Unhealthy</HealthMessage>
</HealthReport>
2010:
<?xml version="1.0" encoding="utf-16"?>
<HealthReport xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <HealthMessage>BroadcastServicesWatchdog_Wfe reported status for BroadcastServices_Host in category '3'. Reported status: Contacting Participant.svc failed with an exception: The remote server returned an error: (404) Not Found.</HealthMessage>
</HealthReport>

Answer 1

Yes, PPTs can be shared correctly; and the urls have been verified.
As to setting the http auth settings ~ this Farm isn't integrated with SharePoint, and is only in use for Lync 2013.
It is clear that these additional service executable , AgentManagerWatchdog, BroadcastServicesWatchdog, and BroadcastServicesWatchdog_Wfe
are from the OWA services to manage system health.
Where can they be configured, or worked with?  They reiterate that
 Reported
status: Contacting Participant.svc failed with an exception
Which leads to more alerts about the Unhealthy state of the machine. What is the "participant.svc"  ?? that is cannot
contact? Is this internal to the OWA Farm, or is this a remote service connectivity check the Lync Front End servers?