This is a short document on how to create a new customizing-path in IMG.
I mave made some changes: I have added the screenshots as pictures.
Create a maintenance view for your customizinh table.
Create a new transaction for the view-maintenance.
In this new transaction declare that you want to call transaction SM30 with the parameter VIEWNAME = your view and UPDATE = X.
GO to transaction SIMGH and select the IMG-structure where you want to add your maintenance transaction.
Modify the substructures by adding new activities.
Maintain the settings for your activity. I have done it like that:
In the tab “Maint. objects” add your new transaction created above.
Good luck when implementing.