Remotely administering ZPA clients

How are large enterprises managing remote administration of off network clients using ZPA? For example; an executive calls the help desk about an issue on her laptop (printing, slow running system, can’t access email etc). How does the help desk admin connect to her system to diagnose the issue? In the past we would have RDP’d over VPN to trouble shoot but now the paradigm has changed. Are support clients that proactively / persistently connect back to the enterprise support systems used and if so what would those be and how are they configured to provide this call back functionality?
Thanks in advance,

You could use something like https://www.beyondtrust.com/ for Enterprise class remote support.
(I have no affiliation with BeyondTrust)

Yes, I have seen this used by several customers for remote Assistance.