To simplify your work, we create special task creator on client details view. Now when you want to delegate an action on specific clients or just create task on some actions connected to him, you don’t need to go outside CRM module. Go to the CRM section, then select the client's profile, which you’re interested in. When you open his profile, at the top of the page you will see a word ACTIVITIES and the arrow symbol next to it - click it and open the context menu from which select the Tasks.
You will see a list of tasks, that are currently assigned to the selected client. Also, if you want to assign a new task to the client, do this by clicking on the Plus icon in the upper left corner of the window. You will open the new task creator. Configure the task, and then click Save button. The new task will appear both on the list in a client's profile, and in an appropriate tab in a TASK module.