# Feature SPAR-257 - Make it possible to include or exclude working days when defining lag per relation

Project: Stream Planning and Reporting
Status: needs clarification
URL: https://community.openproject.org/work_packages/SPAR-257

## Planning

| Attribute | Value |
| --- | --- |
| Date |  |
| Priority | Medium |
| Target versions | Wish List |
| Votes |  |
| 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 | Modules and project features / Relations and scheduling |
| Feature Flag |  |
| Requires doc change | No |
| Enterprise plan |  |

## Details

| Attribute | Value |
| --- | --- |
| Pull preview |  |
| Mockups |  |
| Accessibility | No |

## People

| Attribute | Value |
| --- | --- |
| Assignee |  |
| Accountable |  |
| Product manager |  |
| Developers | OP Dev Sirius Team |
| Designer | Parimal Satyal |
| Ordered by |  |
| Signed off by |  |
| Interest by |  |

## Estimates and progress

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

## Description

**As** a project manager  
**I want to** be able to choose whether lag should include non-working days  
**so that** I have more flexibility in my scheduling

**Context**

Currently, lag only takes working days into account. We plan to soon introduce negative lag: <mention class="mention" data-id="58011" data-type="work_package" data-text="##58011">\#\#58011</mention> 

For a work package that includes non-working days, setting negative lag and having it skip non-working days will feel like a bug. We might want to implement this before we introduce negative lag.

**Acceptance criteria**

  - When adding or editing a relation of type predecessor or successor
    
      - Add a toggle switch to enable adding lag
    
      - Add a checkbox titled 'Working days only'
        
          - Checked by default
        
          - If one of the work packages in the relation has 'Working days only' set to OFF, this is also OFF 

**Technical notes**

  - 
    <br>

**Permissions and visibility considerations**

  - *None*

**Translation considerations**

  - *-*

**Out of scope**

  - 
    <br>