Show the assistant what you mean
The assistant takes files. Attach a screenshot, a log or a document to a message — the paperclip in the message box on the phones, the Mac and the dashboard — and it opens the file and looks at it before it answers. "Set up our board like this one" with a picture of the board is a whole request.
A file rides with your words rather than replacing them, and what is inside it is something you are showing the assistant, never an instruction to it. Files stay part of the conversation: each sits under the message that sent it, and a later message can ask about one you attached several turns ago.
Sharing works the same way. Share a screenshot from another app to Peractor and The assistant — ask about it takes it along with your question — it used to step aside whenever a share carried a file.