[mso] Excel formula needed

I have 10 fields (F5 - F14) that each show the default value of 0. Each day I 
go to these fields and type-over the 0 with a Number.  These add up in the 11th 
cell (F15). 
 
I need a formula that says " If there is a 1 in S36 then lock the 10 fields 
with the default 0. Do not allow a type-over.   If there is not a 1 in cell S36 
(S36 would be empty) allow type-over of the 10 cells. 
 
Can this be done?  I am quite over my head here!!       thank you, Keith 
Paradise, Summerville, SC      843/514-1460 
                                                                        
 

      
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