Kindly help me to solve this problem.

1. I am using Zoho CRM free edition.

2. I have one user 'A' who is Sales Executive to collect lead from market. He is assigned standard profile.

3. I have another user 'B' who is a Tele-caller to make calls to these leads. He is also assigned standard profile. 

4. I have setup a workflow rule to assign all the leads created by user A to be assigned to user B

5. But my problem is user B can't see these leads.

Kindly help.