Hi!
Found this instruction for Mac on their support page.
1. Open ESET Cyber Security or ESET Cyber Security Pro.
2. Press the F5 key to access Advanced setup.
3. Expand Detection Engine → Malware scans → Removable media, select Do not scan, and then click OK.
4. Click the slider bar next to Removable media blocking and then click Setup.
5. By default, all media is blocked once removable media blocking is enabled. Deselect the check box next to any media type to allow it. Once you are finished, close the Media window. Your media blocking rules will go into effect immediately.