I have added 3 new dropdowns in the INQUIRY STATUS Column (In Master Sheet Tab).

P-Meeting
C-Meeting Done
C-Meeting NOT Done

So for a project/assignment related meeting ( which is not a demo/tutoring session!), chose P-Meeting for a meeting to be held in future.
Once the meeting is over, mark C-Meeting Done in the inquiry status itself.
If the meeting can not be done for any reason and you want to close it, chose “C-Meeting NOT Done” in the Inquiry Status. (🔴 Do not chose “C-Not Responding” if you want to Close a Meeting which could not happen!)

🔴 Do NOT touch delivery status in case of such Meetings. Leave them blank.

🔴 Do not mark these meetings DONE in the delivery status.

The idea is to not count these meetings as Paid cases and Done cases.