Can someone please assist me with creating a personal action item
The processes cannot be linked to the Overview page. But if it is a requirement that both assignee and creator of an action item be notified, then a custom solution such as the following is possible:
1. A custom object with two custom attributes - Assignee and Creator
2. A custom process that gets triggered on creation of an instance of the custom object mentioned above. And that which sends a manual action to the person mentioned in the "Assignee" field. Waits for the manual action to complete, and then sends another manual action (with no need for an action), to the person mentioned in the "Creator" field
Don't you like the Home / Organizer / Action Items - press the NEW button where you can then Assign someone to the action item?
Otherwise, yes, you can create a custom object with those two attributes, and write a process as required. There are sample OOTB processes which you could review. For example the sample OOTB process Assign Risks has a sample notification/action step as an example of how this works.