GC Post run macro

I don't know of a macro command to set the GC to sleep at the end of a sequence, but the newer GCs (7890B, 8890, Intuvo) allow you to set up a schedule so the GC will go to sleep at a set time each day.  A running sequence should take precedence over the sleep command.  There is more information in the Resource Conservation section of the 7890B and 8890 Operation Manuals:

7890B: https://www.agilent.com/cs/library/usermanuals/Public/7890B_Operation.pdf

8890: https://www.agilent.com/cs/library/usermanuals/public/usermanual-gc-operation-8890-g3540-90014-en-agilent.pdf

Resource Conservation can also be configured via an Agilent data system.  If your GC is a 7890A, there is an upgrade available to make it a 7890A+, which has most (but not all) of the features of a 7890B.