merge cells disabled how do I enable

[Gary]

I have an xcel spreadsheet that has merge cells button disabled. How do I
enable this button?

 

[Sean Timmons]

Is the workbook shared? If so, you would need to unshare it first.
If not, is it protcted? May want to unprotect it first...

 

[Don Guillett]

That's a GOOD thing. Use center across instead