Actively manage (inventory, track, and correct) all hardware devices on the network so that only authorized devices are given access, and unauthorized and unmanaged devices are found and prevented from gaining access to the network is an example of what security method?

It is an example of CIS Control.

Explanation:

The CIS RAM is an information scurity risk  assessment method that helps organizations implement and assess their security posture against the CIS controls.

since it can be assumed that what aslam is making is a template by compiling all the commonly used excel formatting in several worksheets in an excel document, aslam can choose to save it using the .xltx or .xltm format instead. thus, aslam can distribute the templates he has made to his team members in an easier manner.