I found this Homematic WebUI (for CCU / RaspberryMatic) videos in english that shows easily step-by-step the following scenarios:
Teach in wireless radiator thermostat (HM-CC-RT-DN) and create heating plan
Teach-in new devices thru wireless option and replace existing HM device
Teach-in new devices with serial number
Teach-in HM Motion sensor (HM-SEN-MDIR-O)
Teach-in and rename HM KeyMatic set
Edit KeyMatic direct connection e.g. set toggle
Change double click time settings on buttons
Change device setting HM motion sensor (HM-SEN-MDIR-O)
Create new direct connection HM motion sensor with HM dimmer plug
Configure Wireless Display Push-Buttons (HM-PB-4Dis-WM)
Teach in Wireless Dimming Actuator 1-channel, PWM LED, ceiling-void mount (HM-LC-Dim1PWM-CV)
Create new direct connection Wireless Display Push-Buttons with Wireless Dimming Actuator
Change settings direct connection Wireless Display Push-Buttons with Wireless Dimming Actuator
Change display description of Wireless Display Push-Buttons (HM-PB-4Dis-WM)
Change settings Wireless Switch Actuator (HM-LC-B1-FM)
Create new direct connection Wireless Display Push-Buttons with Wireless Switch Actuator
Teach in Wireless windows sensor (HM-SEC-SC) and create program to use with KeyMatic Set
Create program with Astro time plan to switch on HM-LC-Dim1PWM-CV
Create program with Astro time plan to switch on HM-LC-SW2-FM