Step 1. Login to Plesk Panel.
Step 2. Look for FTP Access option and click on it.
Step 3. Now click on Add an FTP Account to proceed further.
Step 4. Type username of your choice in FTP Account name option.Password field type passowrd of your own choice or you can generate default password by clicking on Generate option.
Step 5. Make sure you have enabled Read & Write Permission and click on OK to save all settings.
Congratulations!