[[File:Custom-action.png|thumb|Selecting "Custom Action..." in treeherder.]]
The <tt>retrigger-mochitestcustom</tt> action (TODO: A better name is needed) is the one selected in the drop-down menu. Modify the task parameters as desired and select "Trigger".
[[File:Custom Taskcluster Job Actions.png|thumb|Treeherder modal to request an action associated to a task]]