For every work type item you can specify inter-item dependencies using the Dependencies tab of the work item editor.
You can link items together using the following link types:
Link type  | 
How it works | 
|---|---|
| Includes / is included in | If an item A includes item B it means that item B is included in the scope of item A. Portfoleon will check that timeline of item B is within the boundaries of the timeline of item A. _Includes / is included_ in is different from _Parent / child_ dependency in the following ways:One item can be included in many items, while an item can only have one parent.There’s no total effort rollup with _Includes / is included in_, while with _Parent / child_ all totals are rolled up to the root parent. | 
| Predecessor / successor | The predecessor must finish before the successor starts. | 
| Starts before / starts after | Item A must start before Item B may start. | 
| Finishes before / finishes after | Item A must end before Item B may end. | 
You can show dependencies on timeline boards as arrows or in lane-by-link mode. Portfoleon will control dependencies integrity when you apply your draft changes.