Calendar formulars

Hi I'd like to use an event calendar to manage the approval / review stages for each exhibition event for my marketing team.

I have downloaded a basic event calendar which is good but I would like to make some tweaks.

I would like to colour code the cells for each event depending on the selected Stage dropdown that is selected using the key outlined
I would also like to OMIT the events "For Review" & "No" so these do not appear in the calendar until one of the other stages is met
In addition to the name of the event I would like to have the attendees listed in the Calendar entry version. Is there some way of including the information from these cells into into the calendar entry
Is there a link that could be made from the calendar entry BACK to the cell row in the events tab to see all the information about the event here

I hope all this makes sense to someone.........................
Hope there's help out there!

Thanks

Jane