Salesmate does not allow creating duplicate pipelines however you can create more than one pipelines with different names. Here's how you can create multiple pipelines
But yes, different pipelines can have a stage with the same name.
To Create Deal Pipeline -
Go to Setup
Click on Deal Pipeline
To avoid confusion while you use them we have included the Pipeline names where ever you use the stage.
Edit Stages if required, by hovering over a stage
Click on Edit icon (pencil)
Create a new pipeline by clicking on + New Pipeline
Add a Pipeline