If you wish to remove all jobs before a certain date or before a certain number (count) of recent backups, please follow these instructions.
There is no way currently to bulk-select entries on the restore tab.
NOTE: If there are any backup files you wish to keep you will need to either rename or move them from their original location. You can [Import] these back into the Restore tab after completing this process.
To open the Backup Retention dialog, please navigate to the Schedule tab and select the [Backup Retention...] button at the bottom left.
Here is a link to the online manual for the retention settings: http://help.novastor.com/NovaStor/NovaBACKUP/19/1/enu/#html/Retention_Overview.htm%3FTocPath%3DBackup%2520Retention%7C_____1
Once the dialog opens, please select [New], give the job a name, then select the [Open] option and [Yes] on the next dialog.
You will need to utilize either the "Age" option, or the "Count" option for this retention job.
If using Age: set the age to the number of days, weeks, or months you want to keep
If using Count: set the number of backups you want to keep
Next, open the Advanced tab in this dialog, select the checkbox "Remove index/logs even if backup file cannot be deleted"
Select [Save...], confirm the job name, followed by [Save].
You will be returned to the Schedule tab, select [Backup Retention...] again, the previously saved job will be open.
Select [Run Now] to start the retention job.
Remove any excess backups from the Restore tab as desired, note that this will only remove the reference to the backup, not the backup files.