To adjust digital and mechanical displays together, start from watch displaying time in digital readout. Pull out center crown (note T in upper window). Cycle h/m/s with lower button, and adjust with rotating center crown.
To adjust mechanical arms only, start with all digital displays off. Pull out center crown (note R in upper window). Cycle h/m/s as described above, and adjust mechanical arms to match digital display. (Only arms should move in this mode)