If you go to Asset Management > Agent Management > Vulnerability Scanner, this is where you can run on demand scans.
Click "Live Scan" and then you can select which agents or which groups you would like to scan
Select what you want to scan and click "run Scan"
The workers will queue up and start the scan process. This can be load and time intensive depending on how many agents you are scanning
If you would prefer these scans to run during off peak hours, you can schedule a scan with the Scheduled task feature 
Once the scans are finished, go to Reporting > Event Search and click on the "Add Filter" option and in the rule IDs sections add 23503,23504,23505,23506 and then click search
Once you have the search, you will want to save the search for future use, so click on save search, name the search something such as 'Vulnerability' and then save
When you have your search results, click the export button to download the results. 
Scheduling Vulnerability Scans
Open Vulnerability Management → Scheduled Tasks and open the Create Vulnerability Scan form.
- Enter a descriptive Task Name, such as “Weekly Linux vulnerability scan.”
- Use Scope and Search within list to narrow the agent list, then select the checkboxes beside the agents you want to scan.
- Choose a Frequency:
- Once, on a specific day: Select this option for a one-time scan and complete the date and time fields that appear.
- Multiple times per period: Select this option for recurring scans. In the Every field, enter a number and choose the time unit to set the interval between scans.
- Click Create to save the scheduled task.
Managing memory usage: Vulnerability scans can use significant memory. On HUBs with limited RAM, schedule small batches of agents and allow each batch to finish before the next begins. If a scan does not finish or returns an error, contact support@atomicorp.com for assistance.