remembered credentials for NAS

[admin]

Essentially found Al3x's finding are what I see also.

I had thought that the implementation would have an option associated
with each job so it could be enabled/disabled as needed rather than being
associated with the credentials dialog. I would like an option
that allows me to change my mind  after the backup job is/was
created.

JD

I'm sorry that Windows doesn't provide a mechanism to establish a separate network share connection for a task, in fact any task will be able to access the network share once a task is connected. We'll add a feature to manage network connections in the future.