If you're still on V6 clients (since you posted in the V6 section of the forum), the easiest way is to create read/write credentials on the NAS, then create an admin account on each Reflect PC with the same username and password, then in Reflect, go to Edit Defaults > Schedule and configure scheduled tasks to run under that account. Since that account's credentials will match an account on the NAS, the scheduled tasks will have write access. Manually executed jobs on the other hand will require the logged-on user to have an authenticated session with read/write access already open to the NAS. If you have (or upgrade to) V7 clients, it's easier. Instead, you just go to Edit Defaults > Network and add an entry there with the path to your NAS and the read/write account you created, and then both scheduled and manually executed tasks will be able to use those credentials when Reflect tries to connect to that destination.
Lastly, if you don't already use it, if you have to manage a decent number of PCs, you may want to look at Macrium Site Manager (here
) to simplify administration. I don't know if it would help with deploying this particular change since I don't use it myself, but Site Manager itself is free if you already have Reflect licenses on the workstations (though it can't be used to manage Reflect Free installations), and using Site Manager also gives you the option to license additional PCs with MALs instead of full standalone licenses. Reflect installations activated with a MAL must
be managed by Site Manager, unlike the standalone licenses, but MALs are also less expensive, and if you have a lot of PCs, they're easier to manage than keeping track of which PC has which Reflect key in use. But again, if you'd prefer to maintain flexibility, you can certainly buying/using standalone licenses and simply add Site Manager to your environment to manage them.