When you create an approval chain, it automatically gets applied to all employees. But you can customize it so that the approval chain only applies to a certain group of employees.
Example: Let's say requests from the Marketing department go through a different approval chain than requests from Sales. In this case, it makes sense to set up two approval chains: apply the first one to Marketing staff, and the other to Sales staff.
From the sidebar, click on Org. Hierarchy> Approval Chains. You'll see the list of approval chains.
Next to the approval chain you want to customize, under the column Action, click on Assign Employees. Two lists will show up: one for unassigned employees and one for assigned employees.
You can move employees from one list to the other by clicking on their name in the list.
Click the >> button to move all employees to the other list.
You can filter employees by work location, work hours, job titles, departments, or teams. The filter will apply to both assigned and unassigned employees.
When you're done, press the Save button to finish.