Hi,
in Interfaces > Indirect > Data reduction on the ISIS Diagnostic tab, there is no option to sum files. I’m pretty sure it used to exist, or it may have summed the input files as default.
It is present in the ‘ISIS Energy Transfer’ and ‘ISIS Calibration’ tabs. Can it please be added / returned to the diagnostic tab?
I imagine it might also be of use in the ‘Transmission’ tab as well.