Excel IF formula - Priority setting

Good day

I have this formula below but need to add another function to it. I have five cell (let say B,C,D,E,F) each with a selection option indication a symbol or not. Each symbol if selected indicates progress on a project in a separate cell (A), i.e. Reported, Initiated, In Progress, etc. Unfortunately I have to remove the symbol (i.e, Cell B) each time the status of the project changes and then select the symbol in another cell (i.e, C) to display the current status. I need to have the project status displayed in the cell A by selecting the updated symbol in cells B-F without removing the previous symbol, in other words the next symbol selection should take preference over the previous one.

Please advise

=IF(I9='Security Safety Meeting - 2019.xlsm'!MARK,Master!$J$3,IF(J9=MARK,Master!$J$4,IF(K9=MARK,Master!$J$5,IF(L9='Security Safety Meeting - 2019.xlsm'!MARK,Master!$J$6,IF(M9=MARK,Master!$J$7)))))