---
title: "Phases and Subphases"
description: "What are Phases and Subphases? What can I do on Phases?"
url: https://support.mosaicapp.com/en/articles/175-phases-and-subphases
collection: "Project Modal Overview"
updated: 2026-07-24
language: en
---

# Phases and Subphases

What are Phases and Subphases? What can I do on Phases?

## What are Phases and Subphases?

**Project Phases** represent distinct, sequential stages within a project, each containing specific tasks that contribute to its overall completion. These Phases provide structure and improve project management efficiency.

**Subphases** are subdivisions within a phase, breaking down tasks into more detailed components. This hierarchical approach enhances control and oversight, enabling more efficient execution and successful project delivery.

In Mosaic, a top-level Phase can contain up to **nine levels of Subphases**, creating a nested structure as deep as **ten levels**. The complete list of phases for a project can be accessed through the **Project Schedule Modal** or **Budget Modal**.

[Learn more about Project Schedule Modal](https://support.mosaicapp.com/en/collections/26-project-schedule-modal)

[Learn more about Budget Modal](https://support.mosaicapp.com/en/collections/27-budget-modal)

Here is an example of a Phase that have nine levels of Subphases.

![](https://staticfiles.gleap.io/ghelparticle/4v4tZdvxkt1Lm1jCw33LrtX1u8pDSGr9KuV6uy7C9gCzyi37Iw8OoCAXyPskP7zyGJOxg2nV6Xn.png)

## Linked Icon

If the Phase or Subphase is linked to intergration or imported from csv import feature, a link icon will show. Click on the icon to navigate to integrations page or import page.

![](https://staticfiles.gleap.io/ghelparticle/VzsaAOttYaFEUfADoDv1RAXRTCIKzb2SSgNoDLw0U3lLzw6HjA7U6z2IxECSoQk0v4UDcPNu4vN.png)

![](https://staticfiles.gleap.io/ghelparticle/StcgeSkXf6UNL4QzuWwwyZjLgdLtVg0CG1dbFDRQeRBxcOEW7STyatGDryIXy8YInq9Eo2Z3p6y.png)

## What can I do with Phases and Subphases?

-   [Schedule Phase/Subphases dates](https://support.mosaicapp.com/en/articles/252-how-to-plan-a-phase-subphase-work-category-or-milestone-on-project-schedule-modal.md)
    
-   [Set Dependencies](https://support.mosaicapp.com/en/articles/176-phase-dependencies.md)
    
-   [Add Milestones, Work Categories and more levels of Subphases](https://support.mosaicapp.com/en/collections/26-project-schedule-modal)
    
-   [Set Baseline Workdays](https://support.mosaicapp.com/en/articles/253-how-to-view-phase-subphase-or-milestone-activities-and-set-baseline-on-project-schedule-modal.md)
    
-   [Set Budget amount and track the cost](https://support.mosaicapp.com/en/articles/55-budget.md)
    
-   [Add members to track working time and cost](https://support.mosaicapp.com/en/articles/55-budget.md)
    
-   [Make Work Plans for members](https://support.mosaicapp.com/en/articles/7-workload-space.md)
    
-   [Add Scopes](https://support.mosaicapp.com/en/articles/55-budgethttps://support.mosaicapp.com/en/articles/55-budget)