Start action

Open context menu of a duct and select ‘Insert Branch Element'

Point to location

And set layer and style options, then ‘Split’

Set location and manhole details

Then ‘Execute’

Select Subducts to divide

Hold ‚Ctrl‘-key to select more than one, then ‘OK’

Create microducts to target location

Set duct type and z-location, do it for all Subducts divided before

Result