Yes, connectors are now available almost everywhere, free plans included. Before you rely on one, open the connector's list of functions, because it can only do the actions it was built for. Connectors change without notice, so test them live before you build anything on them.
More in Microsoft Copilot
Why can I not attach a file in Copilot?
Usually because of where the file came from. Files shared from another organisation often refuse to attach. Save the file to your own OneDrive and attach it through cloud files instead. Or copy and paste the text into the chat, with your instruction first and the data after it.
Can Copilot read files on my OneDrive or network drive?
Usually yes for OneDrive and SharePoint, with Work IQ on a full Microsoft 365 Copilot licence, but always test it, because it varies between organisations. Pick a document and ask Copilot whether it can see it and its contents. A network drive is not the same as OneDrive, so test that separately.
Do the Settings in the Copilot Chat menu apply only to that Chat?
No. Settings in the three dots at the top of Copilot Chat open the same global settings as the menu at the bottom of the screen. Any change you make there applies to all your chats. The three dots only show this option on a new, empty chat.