How to turn a cell's color based on the dropdown box and date?

Hi guys I am working on a simple receipt project,

I was able to turn the cell to red based on a date (after 4days.)

I would like to add and override the color based on a dropdown box or status.

Let's say if the date selected triggers the color red on the cell, but it has a status that says filed then it will override it and turn to yellow instead.

also how do I insert a login password based on

/forum/viewtopic.php?id=1437

but I have already created this project? Can I add the tables and forms separately?

If so may I ask  where on the script should I edit it. Thanks.

Love you all!