Hi @Olive 
Jumping here to let you know that we have recently launched approval tasks in Asana 
In case you have missed the announcement, you can learn more about it here: A new type of task is available in Asana. Meet Approvals!
I’m closing this thread now but if you have any follow-up questions or feedback to share please let us know here or in the #productfeedback category !
We hope you enjoy it! Have a great day!