I had an instance where I wanted the updated information from the agent, but according to support there is no way to refresh the data, you have to wait the 6 hour interval.

Unhappy with this answer, I came up with this little script hack that will force the refresh of the agent information straight away.

del /F "C:\Program Files\Atera Networks\AteraAgent\Packages\AgentPackageAgentInformation\res.cch"
net stop "AteraAgent" && net start "AteraAgent"