# Empty Selector

The `mach try empty` subcommand is very simple, it won't schedule any additional tasks. You'll
still see lint tasks and python-unittest tasks if applicable, this is due to a configuration option
in taskcluster.

Other than those, your try run will be empty. You can use treeherder's `Add new jobs` feature to
selectively add additional tasks after the fact.

:::{note}
To use `Add new jobs` you'll need to be logged in and have commit access level 1, just as if
you were pushing to try.
:::

To do this:

1. Click the drop-down arrow at the top right of your commit.
2. Select `Add new jobs` (it may take a couple seconds to load).
3. Choose your desired tasks by clicking them one at a time.
4. At the top of your commit, select `Trigger New Jobs`.
