Another solution can be to select all the trials in Process1 and call the process "Standardize > Uniform epoch time", and then average the files.
This would work as expected if all the trials have exactly the same number of time samples.
Another solution can be to select all the trials in Process1 and call the process "Standardize > Uniform epoch time", and then average the files.
This would work as expected if all the trials have exactly the same number of time samples.