How not to excecute specific Azure Pipeline stage which is defined with a template

I have a Azure pipeline based on templates which are created by another team. I have no EDIT permissions for those templates. One of the stages of the pipeline is:

  - template: oo-templates/d-template.yaml@RepoTemplates
    parameters:
      stage: 'Test_Deployment' 

It is visible when I run the pipeline from the portal:

I would like to temporary disable it from the code. I have tried to add condition like this:

  - template: oo-templates/d-template.yaml@RepoTemplates
    parameters:
      stage: 'Test_Deployment' 
      condition: false

but it did not bring any effect. Is there any other flag or any other way to "switch off" given stage? preferably in that way that it will be "disabled" be default in the stages list when running the pipeline.

When you queue a new pipeline, all available stages will be selected in the "Stages to run" section. There is no way to automatically deselect a specific stage.

You can control which stages are generated when a pipeline starts, though.

Example

Consider a simple pipeline with 2 stages - Build and Deploy:

If you don't want the Deploy stage to run by default you can define a boolean parameter named deployApplication set to false:

# my-pipeline.yaml

parameters:
  - name: deployApplication
    displayName: 'Deploy Application'
    type: boolean
    default: false # <-------------- Don't deploy by default

stages:
  - template: /pipelines/stages/build-deploy-stages.yaml
    parameters:
      deployApplication: ${{ parameters.deployApplication }}

Stages template:

parameters:
  - name: deployApplication
    displayName: 'Deploy Application'
    type: boolean

stages:
  - stage: Build
    displayName: Build
    dependsOn: []
    jobs:
      - job: job_Build
        steps:
          - checkout: none
          - script: echo Build
  
  - ${{ if parameters.deployApplication }}: # <--------- generate stage based on parameter
    - stage: Deploy
      displayName: Deploy
      dependsOn: Build
      jobs:
        - job: job_Deploy
          steps:
            - checkout: none
            - script: echo Deploy

Queuing a new pipeline - default values:

Deploy stage won't be generated so it won't be visible in "Stages to run":

Selecting "Deploy Application":

Deploy stage is now visible in "Stages to run":