Juniper QoS and SCCM

I'm not a network administrator. I touch about everything but networking.

We use Juniper (Infoblox/ClearPass) network hardware. We have one large campus and a couple hundred branch offices connected by 10 Mbs WAN links which have SCCM Distribution Points on site.

I'm trying to find some documentation or examples that I can pass to our network admins to explain how QoS needs to be configured to allow SCCM communication (Primary Server <> Distribution Point and Primary Server/Distribution Point <> Client PC) without impacting other business processes over the the WAN.

Supposedly it is already configured to ensure core applications and Voice get the data they need, yet we are still taking both down when we ramp up distributions to Distribution Points and clients without BITS throttling enabled (which we really don't want to do because of the scheduling and various point to point limitations).