How can manager approve long pending absence example 1 year or 2 year old leaves of their direct rep

Summary: We have pending leaves from 1 years back till 4 years back with manager of their direct reports. How can manager approve those leaves.

Content (required): We have pending leaves from 1 years back till 4 years back with manager of their direct reports. How can manager approve those leaves.

Version (include the version you are using, if applicable): 22B

Code Snippet (add any code snippets that support your topic, if applicable):