All processes you have access to are listed under the selection Processes in the space menu. 

NOTE: The list can also be found by selecting Model in the default start page or by selecting Show all at the start page.

From this view new BPMN 1.0 and 2.0 processes can be created, edited and deleted, process data can be exported and processes can be uploaded.

For BPMN 2.0 processes the menu More actions is active, through this menu it is possible to select Edit, Make a copy and Download as file, read more in the article Download and upload processes.