Locking all but three cells in Excel

How do I lock all but three cells (m3, m4, and m5) in an excel worksheet please?

Thanks!
Bob SchneiderCo-OwnerAsked:
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Roy CoxGroup Finance ManagerCommented:
You will need to protect the sheet. Do you want to do this manually or with VBA?
Bob SchneiderCo-OwnerAuthor Commented:
Manually please.
Martin LissOlder than dirtCommented:
Initially
  1. Select all the cells on the sheet by way of the little box at the top of the row numbers.
  2. Right-click and choose Format Cells...
  3. Select the Protection tab
  4. If 'Locked' isn't  checked then check it
  5. Click OK
  6. Select M3 to M5
  7. Right-click and choose Format Cells...
  8. Select the Protection tab
  9. Un-check 'Locked'
  10. Click OK
From that point on you can click 'Protect Sheet'/Unprotect Sheet' from the 'Change' pane on the 'Review' tab of the workbook.

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Bob SchneiderCo-OwnerAuthor Commented:
Thank you very much!
Martin LissOlder than dirtCommented:
You’re welcome and I’m glad I was able to help.

If you expand the “Full Biography” section of my profile you’ll find links to some articles I’ve written that may interest you.

Marty - Microsoft MVP 2009 to 2017
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Bob SchneiderCo-OwnerAuthor Commented:
Thank you very much!
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