Make Excel particular sheet protection on net

Hello,

I have Excel sheet, with containing around 10 sheets, tat sheer was shared in net work with 5 diffrrent persons (systems). each person is responsible for add data's for particular 2 sheet. tat person should not edit or access remaining sheet. Make more clear Eg : I am deep working in Sheet 1 and 2 , I should not edit the data's or formulas in remaining sheets (3,4,....10). same way another person ganesh is working on sheet no 3 and 4, he should have access editing authorization for remaining sheet (i.e sheet 1,2,5,6...10). Like.. But keep it mind this Excel work book is shared common net work

Please Help Me with my problem...


Thanks in advance


Deep