how to set expiry automatically on a new file on the box folder

Hi, I have some of the questions on this topic

1. How can we set expiry on a new file being uploaded automatically without manual efforts?

2. Can we auto delete files in the folder that are older than a certain date of upload?

3. Can we limit the number of files and delete the older items in the folder and update with new ones so you always have say 60 or 100 files and the older files keeps being removed?

Any information or way we can work on this can help.

Thanks,

Kailash