# Feature OP-9222 - Work Packages / Gantt: Add Dependencies Options (SS/SF/FS/FF + delay)

Project: OpenProject
Status: new
URL: https://community.openproject.org/work_packages/OP-9222

## Planning

| Attribute | Value |
| --- | --- |
| Date |  |
| Priority | Medium |
| Target versions | Wish List |
| Sprint |  |
| Backlog bucket |  |
| Votes | 40 |
| List |  |
| Roadmap |  |
| Relevance |  |

## OPEN POINTS / FEEDBACK

_No work packages_

## Features and Chunks

_No work packages_

## Bugs and other work packages

_No work packages_

## Technical Details

| Attribute | Value |
| --- | --- |
| Module |  |
| Feature Flag |  |
| Requires doc change | No |
| Enterprise plan |  |

## Details

| Attribute | Value |
| --- | --- |
| Pull preview |  |
| Mockups |  |
| Found in mobile app version |  |
| Follow-up feedback e-mail |  |
| Accessibility | No |

## People

| Attribute | Value |
| --- | --- |
| Assignee |  |
| Accountable |  |
| Product manager |  |
| Developers |  |
| Designer |  |
| Ordered by |  |
| Signed off by |  |
| Interest by |  |

## Estimates and progress

| Attribute | Value |
| --- | --- |
| PD (min) |  |
| PD (max) |  |
| Work |  |
| Labor costs |  |

## Description

**As** a project manager and team member

**I want to** 

be able to express dependencies between work packages as they really are e.g.

  - SS: start-start +- x days 
  - SF: start-finish +- x days
  - FS: finish-start +- x days
  - FF: finish-finish +- x days

**so that** 

changing start-/finish dates (or both) of previous work packages correctly adjusts its depending packages.

This kind of Information is critical in planing efficiently (especially building sites / logistics / just-in-time ) and it is pretty bad when the manual arranged time relations get lost by changing previous packages. 

**Acceptance criteria**

  - additional time relations can be added to a package
      - proposal: 
          - on rightclick on a workpackage instead of "add previous", display option "add dependency" or similar
          - on click/hover "add dependency" display submenu with SS/SF/FS/FF option and delay option (+- x days)

                    alternative / better: see dependency related feature request <mention class="mention" data-id="33553" data-type="work_package" data-text="#33553">\#33553</mention> 

  - the dependencies are displayed in Gantt chart
      - proposal to display dependency:
          - SS/SF/FS/FF with lines as is, linking to the appopriate end of the bar depending on the kind of dependency. 
      - proposal to display delay:
          - in the Gantt-view-settings create the set delay as an option to display delay left or right of the bar. 
          - optional: display delay at the connecting line