Since To-Do List is optimized to work generally with a piping assembly which is part of some top-level assembly and is opened in edit mode, there has been designed a function able to create such subassemblies automatically.
Create subassembly in CAD creates a subassembly of the active assembly (even if it is opened in edit mode).
Typically, the new subassembly name is taken from the original P&ID line property Line Number (this value is also taken as the name for multi-pipelines or first part of names of pipeline nodes in To-Do List).
In case of an integration with some PDM system, the name could be set automatically.
To create a subassembly in CAD, follow these steps:
See also Creating Subassemblies