Make a recurring daily appointment (exclude weekends) and mark it private.
Do this for the times (such as lunch or breaks) when you know you want to
not be scheduled. Set your planner options to automatically decline
conflicting appointments.

Signature
--?
Milly Staples [MVP - Outlook]
Post all replies to the group to keep the discussion intact. Due to
the (insert latest virus name here) virus, all mail sent to my personal
account will be deleted without reading.
After furious head scratching, Viral Parikh asked:
| There are certain times during the day, when I need to carry out the
| daily routine tasks, like checking emails, have lunch etc, for which
[quoted text clipped - 3 lines]
| slots where it does not let others see me as available. I need
| something like a PRIVATE time.