I would like to be able to add a task, note or event, that only can be viewed by myself only.

I would like to note personal stuff into ZOHO CRM that is strictly visible for my eyes only.

I don't want a boss nor a colleague have any way to see this info.

The reason is that my function requires to be fully confidential with certain contacts their info, as it contain privacy related material.

How can I achieve that?

Thanks in advance,