Whats the best way to do this....
I have ManagerA who is owner of all accounts... ManagerA would like to share some of his accounts with RepB and some accounts with RepC.
RepB and RepC should NOT see all of ManagerA accounts AND RepB and RepC should NOT see each others account.
Also, RepB and RepC should be able to make opportunities to the shared accounts from Manager A.
Is manual sharing the only way to achieve this?
Note: Org-wide is private for account and opportunity.