How do I create backup sets, The backup instructions and tutorial tell me to click 'open' on device security but I do not have this option

I was also struggling but this is how i managed to back up a 1GB folder

1. Configuring your own backup
To choose the files you want to back up, click on the down-arrow next to the Run Backup button, and then click ‘Manage Backup Sets’ (this is just called ‘Backup Sets’ in the classic Norton 360 main menu). The Backup Settings menu pops up, and you can see the default settings which are applied out of the gate when you first use Cloud Backup (they’re called “DefaultSet”).
To make a new configuration for backing up on your PC, click on ‘Create New Set’ in the top menu.
2. Configuration parameters: What to backup
First off, you must give the backup set a name, like “My Important Files” for example. Type in what you want to call the set and click ‘OK’. You’ll notice that the Backup Set you’re now working with – highlighted in the box in the top menu – is now this set you have just named.
The first job is to configure what you’re going to back up with this set, so click on the ‘What’ tab (the first one next to Summary). Next, click on ‘Add or exclude files and folders’.
At this menu, to tag a folder to be backed up, click on ‘Include Folder’ (at the bottom) then find the folder you want in the Explorer panel that pops up, select it, and click ‘OK’. You’ll see that folder appear in the list, and it’ll be marked as Included in the rule column. Folders marked Excluded are, obviously enough, those which won’t be incorporated in the backup. If you want to remove an exclusion – or an included folder for that matter – just click the box on the left of it, and then click ‘Remove from list’ at the bottom-left of the panel.
3. Configuration parameters: What to backup part 2
Using the ‘Include Folder’ function repeatedly, you can build up a list of folders you want backed up. If there are subfolders within a folder you’ve selected that you wish to exclude from the backup, simply use ‘Exclude Folder’ in the same way to remove them from the set.
Similarly, you can use ‘Include File’ and ‘Exclude File’ to incorporate or remove individual files from a backup set as required.
Once you’ve picked everything you need covered, click the yellow ‘OK’ button.
4. Choose file types
You’ll find yourself back at the Backup Settings menu, still in the What tab. Note that as well as the files you just picked out, My Documents is also selected here, by default, on the left-hand side under Sources. If you don’t want this included, uncheck it.
Now turn your attention to the File Types panel, and turn on the files you wish to be backed up. If you want everything, turn them all on (green). If you don’t want videos, say, because they’re so large, then leave that off. Note that you can also fine-tune these categories by ticking ‘Edit File Type’, which will pop up Configure buttons for each file type; just click on one and you’ll be able to choose, for example, which image file types are included in the backup (maybe you only want JPGs, and no giant RAW files, for example).
5. Select backup location
Next, click on the ‘Where’ tab. All you have to do here is make sure ‘Secure Cloud Storage’ is selected, which is Norton’s online storage locker (it should be by default).
You can also back up to an external drive here, instead, but Norton recommends its cloud facility as the most secure option. Indeed, you’ll also see your local drive here, but obviously there’s little point backing up to that, as if the drive fails, you’ll lose both the original files and their backups. Although that said, if a single rogue file goes corrupt, a backup on the same drive could still prove useful.
6. Choose backup schedule
Now click on the final ‘When’ tab which pertains to backup scheduling. The default (and recommended) choice is ‘Automatic’ which means exactly what it says – Norton takes care of running backups regularly in the background, whenever your PC is not being used (but is turned on, obviously). This seems like the best bet to us, though if you prefer, you can click to have ‘Weekly’ or ‘Monthly’ backups with a specified start time or date. Or alternatively, choose ‘Manual’ if you only want backups run when you manually fire them up from Norton’s main menu (using ‘Run Backup’).
7. Save the configuration and run your backup
After choosing your schedule, that’s everything configured – click on the ‘Summary’ tab to go back there, and you’ll see all the settings you’ve just chosen neatly summed up. If you click on ‘Preview File List’ you’ll see a full list of all the files that will be backed up when you run the backup process. If you’re happy with everything, all that’s left to do is exactly that: first click on ‘Save Settings’ to save the configuration changes you just made, then click ‘Run Backup’.
Your backup will then be processed, and how long it takes depends on the size of the files being uploaded (and the speed of your internet connection, naturally). Once done, Norton will let you know that copying is complete, then you can click on ‘Close’ and you’ll be returned to the main menu.
8. All done!
Congratulations – your precious data is now backed up. If you’ve chosen scheduled backups, they will occur automatically going forward, but should you ever wish to change anything, you can click ‘Manage Backup Sets’ from the main menu and tweak the configuration, or change between different Backup Sets.
To switch Sets, just use the dropdown menu at the top of the Backup Settings panel, and choose the name of the backup you want to run. Most folks will be fine setting up just the one backup configuration, though, and having that run indefinitely, maybe tweaking it occasionally as required.