The small magnet icon at the top left corner of each phrase can help you to automatically transpose the phrase relative to the previous phrase or an envelope. You cannot move a phrase when the magnet is active. When several phrases are connected, you can move the first phrase and all other phrases will follow it.
The magnet has three states:
disabled, you can freely move the phrase around
it may point to the previous phrase which means the phrase will be adjusted to the previous phrase
it may point upwards which make the phrase follow the phrase envelope.
Right clicking on the magnet will offer 5 ways of automatically transposing phrases:
The envelope is evaluated at the phrase starting position:
The shorter the phrases are the smoother they will follow the envelope. Here we created a very simple phrase lasting for 2 beats that consists of only scale notes (set the Note Mapping option to "Scale Notes [+semitones]"):