If you feel the need to copy something, think about asking the agent to do what you would have done after copying and pasting it.
You have explained the task, collected useful links, and worked through the details. Now you want another agent to review the plan. So you start selecting messages, copying instructions, and explaining the context again.
Try asking:
Ask another agent to review this plan. Give it the requirements, decisions, and source links from this conversation. Ask it to find missing steps and bring the findings back here.
Apps that support agent delegation can handle that exchange. You describe the work and the context it needs. You do not have to carry every message yourself.
The same applies to connected services. Before copying meeting notes into a project document, ask the agent to add the decisions there. Before opening every source link and pasting the contents back, ask it to read the linked pages and use them for the task.
The available tools and permissions still matter. Agents do not automatically share every conversation or have access to every service. Give a clear destination, ask for the review results or the updated document link, and check the result.
Before reaching for copy and paste, describe the next step. Just ask.