When we create a flow using Microsoft Flow, the person who created the flow only will be able to maintain it. Team Flows will allow the person who created the flow to assign additional owners to maintain the flow. Team Flows is currently in “Preview” only.
a) Click on “Invite another owner” icon beside the “Blog post notification to Twitter” as shown below.
b) Add another owner who is an user as part of your office 365 subscription.
Note: Adding another owner will allow them to edit, update and delete the flow. They can also add additional owners to this flow along with viewing flow history. Also everyone listed as owners will be able to access all embedded connections and can use them in that flow only.