In Develop mode, use the processing tools to apply edits to an image and then save those settings as a Develop Preset. Your Develop Preset can then be applied to multiple files within the Batch workflow tool.
To Apply a Batch Develop Preset:
To apply multiple actions at once, select Batch | New Batch Workflow... from Manage mode. In the Batch Workflow dialog, select actions from the left pane and drag and drop them into the right pane.