Approvals for multiple lines


I've seen this question asked a few times and I understand it isn't possible to set up a workflow to approve multiple lines as once, but a comment that has appeared as a workaround is to use a report to mark the lines as approved, declined, etc.

I am relatively new to Smartsheet and don't understand how to make this work. Is there anyone that could give me some tips or point me in the right direction for a training course that would cover this solution.

Thank you!