Harsh, you can use a microflow data source. Put a retrieve action to get Leaves from database with XPath constraint like this
[Test.Leave_Employee/Test.Employee/Test.Employee_Manager/Test.Manager/Test.Manager_Account = $currentUser]
Hi Harsh Bhanushali,
In the list view of manager dashboard page use xpath to retrieve only the leave which is assigned to him. when an employee requests leave you are directly assigning a manager to whom it needs to go for approval, so use like this in that list view of manager dashboard page,
Xpath:
[XXX.Leave_Manager/XXX.Manager/XXX.Manager_Account = $currentUser]
Note: make sure you are associating manager and account