Authorizations for the protected device resources in a Site or View are taken from the authorizations granted at the Network or Individual Device level.
If you have been provided the access or permission (either at the network, or specifically on the device) to update that device and schedule changes for the device to the scheduler, you can complete this task from any Site or View that contains a representation of that device in the network.
To create a Site or View, or to modify its contents, you must be able to Modify Network permissions.