instructions should be in the installation guide.
Besides running maintenance release, you will have to upgrade your FDM application(s).
I would recommend to copy database and shared folder to new location (if needed) and then:
- Add application (Workbench)
- Run FDM Schema Upgrade utility
- Run User Migration utility if needed
- Upgrade your adapters (not sure if there were new adapter versions in 18.104.22.168)
- Review your adapter options and test connectivity between FDM and your target applications (for example, try to setup the control tables)
Hope that Helps.