Currently, the Comala Document Management app cannot have more than one active space workflow defined. There is no option to filter this space workflow application by the content label.
Only one workflow can be defined for a space in cloud and applied as a space workflow across all content in the space.
Workaround
In cloud, a workflow can be created with different paths, to be applied at space level.
For example, if there are pages in your space that do not require a workflow to be applied, you could add a workflow state 'No workflow needed' to your workflow.
Further information
