Here's how to do it:
- Login to your Dropbox account.
- Hover over the file with which you want to share the link and click the 3 dots.
- Select “Share” and click "Share with Dropbox."
- Click on the "Copy link."
- Now select "Setting."
- Edit the settings accordingly and choose "Save."
- Enter the email address of the person you want to share the file with. Add notes as necessary and click "Share file" to finish.