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If the category has sub-categories, click the category name to view the list of sub-categories:
By clicking over a category or sub-category, another page with all the active workflows will be opened:
Workflow actions:
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In order to start the execution of a workflow, click on the 
icon 
hyperlink matching the workflow row. The Start Workflow form will be loaded, displaying the input parameters and other fields that can be customized for visibility from Administrator (e.g. Comments field), together with the Close and Start Workflow buttons:
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