1 | What are list entries?
List entries are attributes for Types that have several choices. The example image shows the choices for a drawing type document.
2 | How to set List Entry to enable multiple selection?
Simply check the box “Multiple selection”.
You can now add however many choices you want in the List administration.
3 | List administration
Edit or add the list entry selections by clicking on the "Edit" icon to the left of an entry.