How do I add Brother Printer to my iMac running macOS Sequoia?

Apple suggests connecting the Printer to your local network and using AirPrint. see > About AirPrint - Apple Support

Then use the directions at > Add a printer to your printer list so you can use it on Mac - Apple Support

Also bookmark and/or save > Print documents from your Mac - Apple Support

Also, in case additional information is needed, it would help to know the exact Brother printer model.