Manage Software on a Single Resource is the go-to interface when doing software deployments. It can deploy software to devices and users. Manage Software also provides a lot of tools to help troubleshoot failed deployments.
The interface is divided into 3 columns. The left is where you select the target resource. The middle is where you select software. And to the right you have a list of software changes you are about to make and the option to apply a schedule.
You operate from left to right. So you start by selecting a resource.