This feature can be used on existing devices (Menu → Devices) and during configuration of TapHome Bus modules (Menu → Hardware → TapHome Bus → Module)
Tap and hold first device until its icon changes to selection icon or click Select button on right-top of each group. Once you are in selection mode, tap to Select or Deselect any device. Also, you can Select all or Deselect all devices from a group using the same right-top button. Once the selection is done, tap the button in top right corner:
Please note, that Name and Zone attributes are empty, because one or more selected devices contain different value. Editing any attribute sets the same value to all selected devices.
Tap Back button to finish editing and save changes: