The original 7890 version of the GC Chemstation (version B.03.01) did not have an “Apply” button within the Edit Parameters Screen. The “Apply” operation could be accomplished by “Right Clicking” in the gray space of the Edit parameters screen and selecting “Download Method to GC”. This would send the current parameters from the Chemstation to the 7890.
In all versions, clicking “OK” downloads the method changes to the 7890.
Versions B.03.02 and B.04.01 have an “Apply” button as shown below:

The 7890 Method can also be “Uploaded” from the GC to the Chemstation from the “Instrument” Pull down menu.
