Thanks so much for the reply,

could you explain deeper the step 2: "Look for the filters or search bar available in the tasks section."?

It seems I don't have any visible filter or search inside the project form view.

I've tried to add a filter inside the task model, applying it only to the action project but it seems it doesn't work in the project form view.

Thanks for your help

Hi,

To hide subtasks in the tasks tree view inside the project form view directly from the UI, follow these steps:

1. Navigate to the project form view in Odoo.
2. Look for the filters or search bar available in the tasks section.
3. Set the filter to "Parent Task > is not set" .
4. Once you apply this filter, only the parent tasks (tasks without a parent) will be displayed, effectively hiding the subtasks in the tasks tree view inside the project form view.

By applying this filter, you can easily hide subtasks and focus on viewing only the parent tasks directly from the user interface without any customization or development work.

Hope it helps