---
sourceDocument: Australia Strategic Portfolio Management
sourceDocumentLink: https://www.servicenow.com/docs/r/australia/it-business-management

 Release :

    - australia

ft:locale :

    - en-US

ft:publication_title :

    - Australia Strategic Portfolio Management

ft:clusterId :

    - itbm

bundleId :

    - itbm

workflow :

    - Technology


---

# Extend or reduce duration of an assignment

# Extend or reduce duration of an assignment {#ariaid-title1}

Release version: Australia  
Updated October 5, 2026  
![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read  
Extend or reduce the duration of an assignment from the grid view in Resources when the work duration shifts. When you extend or reduce the assignment duration, the assignment dates update and the allocated effort
recalculates across the new date range based on the effort redistribution property.

## Before you begin

Role required: it_demand_manager

The com.snc.resource_management.redistribute_effort_on_extend_reduce property is enabled. For more information, see [Resource Management properties](https://www.servicenow.com/docs/ksyqUn1ODPiH7836_Ozm9Q "The Resource Management application provides several properties to control allocations, schedules, and other settings.").

## Procedure

1. Navigate to WorkspacesPortfolio Planning Workspace.
2. Select the Demands icon ![]().
3. Open a demand from the List page.
4. Select the Resources tab.  
   The resource grid opens for the demand's timeline, grouped by Primary Group.
5. Select the chevron icon (![Chevron icon.]()) to expand the resource view.
6. Locate the row for the resource assignment you want to update.
7. Update one or both of the following date fields to extend or reduce the assignment:  
   * Start date: Move earlier to extend the assignment or later to reduce it.
   * End date: Move later to extend the assignment or earlier to reduce it.
   {#extend-reduce-dates-for-assignment-ppw__ul_extend_reduce_dates}
{#extend-reduce-dates-for-assignment-ppw__steps_ib2_5gb_tkc}

## Result

After the dates are updated, the initial effort is recalculated for the entire assignment duration including the new date range.

*[\>]: and then