Adobe DC pro - Send for approval

Hello :

I have downloaded the trial version of acrobat DC pro. I am researching the possibilities of send for approval with this link

https://helpx.adobe.com/acrobat/using/approval-workflows.html#

However for the life of me I cannot find this

To start an approval workflow, choose Share> Send By Email For Approval.

Can some body point me as to what I am doing wrong?

thanks

R