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 Map:

On the Map, click the work area cell
Select the , or tool to draw a Work Area
Adjust the work area shape by dragging and dropping if needed, click on the fab to exit

To draw a Work Area on the Gantt:

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 on the Gantt:

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

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 Clashes within the project

The Clashing Tasks panel shows every active clash across your project. Filter by owner, location or date range, and resolve Clash pairs directly from the panel in both Gantt and Map views.

To open the Clashes Panel:

Click the Clashes Iconin panel toward the right of the Gantt
The Clashes Panel will open
Choose between Clashes , Non-Conflicting & For Review

Clashing states

State

Tab

What it means

Clashing

Clashes

Detected clash, not yet resolved

Pending Review

For Review (recipient) / Clashes (requester)

One owner has requested non-conflicting status; the other hasn't responded yet

Non-Conflicting

Both parties have agreed the pair is not a real conflict

Clashes Panel Rules & Logic

Use the config icon in the top-right of the panel to adjust what you see. Filters apply across all three tabs simultaneously and are saved per user
For review shows your personal inbox for incoming non-conflicting requests from other Task Owners. Only shows requests relevant to your Tasks. Admins have no visibility of all requests.
You are able to revert clashes that have been marked as non conflicting

Bulk 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:

Click the Clashes Iconin panel toward the right of the Gantt
Click and bulk select the pairs you want to resolve
Click
Pairs you fully own resolve immediately, pairs you only partially own send a request to the other owner

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