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Clashes & Work Area

Who can use this feature?

Task Owners, Assignees and Admins can add Work Areas to tasks.

Clashes are visible to everyone on the Project. Admins and Task Owners can resolve Clashes.

Work Areas let you define the physical space each Task needs to take place. Once a Task is assigned to a Location, you can draw its Work Area on the map. That shape stays linked to the Task and automatically updates as dates change - helping you communicate exactly where work is planned to happen.

Clashes are triggered when two tasks are scheduled to use the same space at the same time. If their Work Areas overlap and their dates intersect, a Clash is flagged - giving teams a chance to coordinate early and avoid planning conflicts on site.

Marking up a Work Area

To create a Work Area, open a Task and draw the shape directly on the Map.

To draw a Work Area:

  • On the Gantt, open the column picker and toggle Location and Work Area

  • Make sure the Task you want to mark up has the correct Location assigned

  • Double-click the Work Area cell to open the drawing window

  • Select the pen tool to draw a Work Area and click to mark each corner of the shape - no need to click and drag

  • Once the shape is complete, the cell will show that a Work Area has been added

  • The task can now be viewed on the Map

Add a Work Area to multiple tasks:

You can easily add the same Work Area to multiple Tasks by copying and pasting from the Work Area column:

  • In the Work Area column, select the cell with the Work Area to copy and press CTRL + C on your keyboard

  • Select the Work Area cell of the desired Task and press CTRL + V to paste the Work Area

Tip!

If you have multiple Tasks in a row that need the same Work Area:

  • Hold SHIFT between selecting the top and bottom cell to highlight everything in between, then CTRL + V will paste the Work Area into all of the Tasks at once

Work Area Rules & Behaviour

  • Each task can have only one Work Area

    • To represent multiple areas, break the task into subtasks and assign a different Work Area to each

  • Work Areas must be complete shapes

    • You’ll need to draw a closed polygon, open shapes aren’t supported

  • Snapping helps prevent accidental clashes

    • While drawing, your cursor will snap near the edges of existing shapes (but never directly on top) to help avoid overlap

  • You can use drawing tools like pen, rectangle, or circle to mark up the shape

    • Use the hand tool to pan around the map

    • Zoom controls help you focus on the right area before you start drawing

  • To edit a Work Area, just open it and drag the points to adjust the shape

  • To remove a Work Area, right-click the cell and select Clear

  • If no Work Area is needed, you can set the cell to No Work Area Required

    • This completes the field without drawing anything on the map

Identifying Clashes in the Plan

If a Task clashes with another, you’ll see it right away on the Gantt. Clashing Task Bars turn red instantly, and selecting a Task highlights which days are safe to move to, and which would still result in a clash.

To spot clashes on the Gantt:

  • Clashing Task Bars always appear red regardless of your settings or overlays

  • Single click a clashing Task Bar to see available dates on the Gantt

  • Aphex scans the full project and highlights cells behind the Task:

    • Red = moving here would still cause a clash

    • Blue = safe to move, no clash detected

To highlight clashes on Map:

  • Open a Map View

  • Click

  • Select Highlight Issues

  • Pick Clashes

  • Tasks with clashes will have their Work Areas shown in red

To see clashes on Board and List:

  • Tasks with Clashes will display this icon

Clash Detection Rules

A clash will only be triggered when all of the following are true:

  • The Tasks are in the present or future

  • The Tasks have overlapping Dates

  • The Tasks are on the same Shift

  • The Work Areas overlap

  • The Tasks haven't been marked as Non-Conflicting with each other in the past

Find your Unresolved Clashes

As a Task Owner, it's your responsibility to resolve any clashes related to the Tasks you own. The Clashes Panel shows a focused list of your clashing Tasks within the lookahead window, so you can review each one and make sure your part of the plan is conflict-free.

To open the Clashes Panel:

  • Click the Clashes Icon in panel toward the right of the Gantt

  • The Clashes Panel will open

  • Here you will see a list of all unresolved clashes related to Tasks you own

Resolving Clashes

Once you’ve identified a clash, there are a few ways to resolve it. You can adjust the Dates, Shift, or Work Areas of the Tasks involved, helping create clear separation in time or space. If the clash isn’t actually a problem, and both Tasks can go ahead as planned, you can mark them as non-conflicting.

To mark Tasks as non-conflicting:

  • Right click a clashing Task and select View Details

  • In the Task Panel, scroll to Related Tasks

  • You’ll see all clashing Tasks listed, along with their Owners

  • Click the icon to mark a clash pair as Non-Conflicting

    • If you don’t have permission to edit the other Task, a Clash Resolution Request will be sent to its owner

    • Once they accept, the clash will be resolved

Non-Conflicting Rules

Permissions:

  • Admins can mark any Clash as Non-Conflicting

  • Users who are Owners of both clashing Tasks can mark their own Clashes as Non-Conflicting

  • Users who are Owners of one clashing Tasks can request to mark a Clash as Non-Conflicting

What happens when a clash is marked as Non-Conflicting:

  • The two Tasks are permanently linked as non-conflicting

  • Even if the Dates or Work Areas change in the future, they will not trigger a clash again

Filter for Clashes

You can filter any view to show just the clashing Tasks. It’s useful for Task Owners working through their own issues, or for Reviewers/Admins checking the plan’s readiness across the project.

To filter to Tasks with Clashes:

  • Click and

  • Select Issue in the first dropdown

  • Select from Is or Is Not in the second dropdown

  • Select Clash in the third dropdown

Pre-made Clashes View:

Your Project comes with a pre-made Clashing Tasks View.

  • Click + Views within the open View Tabs

  • Select Clashing Tasks View

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