You can copy and paste items, including notes and notations, to other rhythmic positions and staves in different ways.
Procedure
Result
The selected notes/items are copied without deleting them from their original positions. By default, any MIDI CC points in the copied range are also pasted.
If you copied dynamics or slurs to other staves at the same rhythmic position, they are automatically linked by default.
Tip
You can assign key commands for Duplicate to Staff Above and Duplicate to Staff Below on the Key Commands page in Preferences.