This works for both UML Class Diagrams and SysML Block Definition Diagrams.
Note that there are separate settings for Property and Port:
- Show Association Ends As Attributes
- Show Association Ends As Ports
Make sure you have the symbol options display level set to 'All' (not even 'Expert' is enough) then leave it that way forever!
Webel: MagicDraw/Cameo: Set EVERY element properties & symbol properties filter to 'All' (yes, not just 'Expert', to 'All', even if you are a "novice" on your first project) in EVERY dialog and every project option setting. Use the dialog search filters!
SysMLv1: MagicDraw/Cameo: Oh no, I lost my part or reference property? Where did it go? The Symbol Properties option for 'Show Association ends as Attributes' may help you find it!
MagicDraw/Cameo: If you want to show a Property or Port listed both in its corresponding compartment on a Class or Block symbol and as the end of an Association in the same diagram, set the display option Show Association Ends As Attributes/Ports to 'all'