Run plan in ataccama by getting option to select source system or schema

How to create a plan which will have ability to run the plan by using the source system/schema for all source systems or by a single source system using ataccama

Hello,
Can you please elaborate on what you want to achieve?
You can create a workflow, which is able to run a plan/plans for you. I do not understand what you mean by source systems.

Regards,
Maksim