Once a file is quarantined, you have two choices of action (three for Windows users) that you can take:
1) Safelist the file.
If you believe it to be safe and deem it necessary to perform everyday actions on the device, then safelist the file. Here are the instructions: How To Safelist a File.
2) Let the file stay quarantined.
If you choose to allow the file to stay quarantined it will be deleted from the quarantine folder on a monthly basis to ensure it does not take up space on the machine.
3) Delete the quarantined file.
If you would like to remove the quarantine files from your machine for any reason, please follow these instructions to do so: How to - Delete Quarantine Files.