Hi @mcp0228,
Unfortunately, loop over subjects is not supported in the Pipeline editor
To run your pipeline for each of the subjects you would need to make use of scripting.
See this scripting in Brainstorm tutorial:
https://neuroimage.usc.edu/brainstorm/Tutorials/Scripting
The looping over subjects is described in the Loop over subjects section of that tutorial
https://neuroimage.usc.edu/brainstorm/Tutorials/Scripting#Loop_over_subjects
If you have any question after reading the scripting tutorial, do not hesitate in posting it in the Forum.
Best,
Raymundo