If you are looking to delegate work, then set up a private community for you and your virtual assistant. And include any other people who may require access but ask them to ‘turn off notifications’. (this means you can call them into the threads).
Use a +mention of the assistant when you post, asking them to have the setting for it to appear in their email.
Why? People can lose notifications but you can manage your email not to.
Next, using Google Drive, simply drop a link (which they ‘can edit’) into the community via the ‘Link section’ on a post.
Add a clear title to the post as to the nature of the task, and then give instructions to your assistant.
Your assistant can then +1 the post to acknowledge they’ve seen it.
And then +mention you in comments when it is completed, or to ask you questions.
You can either acknowledge with a +1, or you can reply to them.
This keep the conversation for one project, within one community, all in one place. Very handy indeed.