How do I change FTP/SSH access password?

FTP account password can be changed in two ways:

1. In R01 account manager → "Hosting" section  → "Domain names under hosting service" column click on "Change FTP password for a domain name under the hosting service" link  
2. In Plesk interface ("Domains" section) click on the domain name as an active link → select "Web hosting settings" in "Website" section → enter a new password there.