Filter record list and display only the list of requests logged by the logged in user.

Hello everyone,

In my use case, I have managers and they can log a new request for an employee, 

I want to filter the record list so that the manager who is logged in, suppose A he should be able to see only his requests and not other managers. 

On the other hand, when a supervisor logins they should be able to see all the requests by all the managers.

How can I achieve this?

Thanks and regards,

Aishwarya