How approves or users can see all the pending approval requests?

We have 10++ sites and on some lists and libraries, inside those sites we define content approval at the list/library level:-

Now the users are bit confused, on how they can access those approval requests? is there a screen they can access to see all those pending approval requests? either for all sites or the current site? as currently most of the items and files are pending approval and no one is taking action on them

Thanks