No Share workbook option

[Dryver14]

I am learning excel (properly maybe) by doing a course to learn all the things I have stepped over over time!

I am at a lesson for sharing workbook. My option for this is greyed out.

I can see options on the review tab for 1. Protect Sheet 2. Protect workbook 3. Allow edit ranges 4. (In Grey, Unshare workbook)

Any Ideas?

 

[Peter_SSs]

These should help
https://support.office.com/en-us/article/what-happened-to-shared-workbooks-150fc205-990a-4763-82f1-6c259303fe05
https://support.office.com/en-us/article/about-the-shared-workbook-feature-49b833c0-873b-48d8-8bf2-c1c59a628534

 

[Dryver14]

Thanks Peter, That answers the question at least, I will watch the video on co-authoring in time .