Excel for Office 365 for Mac Excel 2019 for Mac Excel 2016 for Mac To prevent a user from accidentally or deliberately changing, moving, or deleting important data, you can lock cells and protect them. Locking cells takes two steps: adding the Lock formatting to the cells, and then turning on protection of the sheet. To lock cells • Select the cells that you want to lock. • On the Format menu, click Cells, or press + 1.

• Click the Protection tab, and then make sure that the Locked check box is selected. Note: The password is optional. If you do not supply a password, any user can unprotect the sheet and change what was protected. If you do enter a password, make sure that you choose a password that is easy to remember, or write it down and keep it in a safe place.

In most word processing programs, as well as other software, you can create new paragraphs by pressing the Return button. Pressing 'Return' when typing in a cell on Microsoft Excel for Mac highlights the next cell. A different key combination is needed to create a new paragraph in an Excel cell.

If you lose the password, you can't access the protected parts on the sheet. • If you don't want people to select locked cells, click to clear the Select locked cells check box. • If you want people to be able to select and fill out unlocked cells, click to select Select unlocked cells. • Before you click OK to finish, you might want people to do other things to the locked cells, like select them or format them. If so, under Allow users of this sheet to, choose the elements that you want people to be able to select or change. To unlock cells • You may need to temporarily turn off protection so that you can unlock cells. On the Review tab, click Unprotect Sheet or Unprotect Workbook.

Then type the password. • Select the cells that you want to unlock.

Then click to clear the Locked check box so that it is not selected. • If there are other cells that still need to be locked, on the Review tab, click Protect Sheet or Protect Workbook. Then type a password for the sheet, and verify it by typing it again.