If you want employees to be able to have their time off requests automatically approved, or you find this is already happening and you want to turn this feature off, this is easy to configure.
This setting can be enabled or disabled in the employee's time off policy.
Click your name on the top right, then click Settings.
On the settings menu click Time off, then click Policies.
Scoll down to Workflow, and click on the dropdown arrow.
Select or clear Automatically approve these requests.
When enabled, time off requests added by employees will not need manager approval