I have a job that runs with an interval trigger for every 30 minutes.
I would like the job to run every 10 minutes from 6AM to 10AM, but then every 30 minutes outside of those times.

In the SQL Server job engine you can specify active times for each trigger therefore using multiple job triggers for this effect. All I can find for VC triggers is an actual expiration date. I don't want the trigger to expire but just to only be active during certain time intervals.

Yes we and others asked for this some time ago. There is one workaround which is to disable the triggers and re-enable them via a separate job but we would like this within the job to make it easier to read/maintain