How to retrive back deleted worksheets?

[one-eye-jack]

How do I retrive back accidentally deleted worksheets?

 

[David Biddulph]

Use the backup.

 

[one-eye-jack]

How to use backup? Where to find this backup command? Thanks

 

[David Biddulph]

File/ Save As/ Tools/ General Options/ Always create backup
If you didn't create a backup last time, make sure that you do so in future.