Hello @finefinishkb,
My name is Alejandra and I am happy to assist with your inquiry, and appreciate you contacting LastPass Support!
Welcome to LastPass and thank you for using our service. To start up using LastPass on Mac the best option is to set up the extension on you prefer browser. If you use Safari you will need to set up the extension and the application in that way when you start up adding your passwords you will be able to have the option to autofill.
If you need anything else, let us know.
Kind Regards,
Alejandra
LastPass Tech Support
Can I call you to discuss this and have you walk me thru it?
Thank you for your reply.
If you want that one of our agents contact you via phone call. You can go to this linkhttps://support.lastpass.com/s/contact-us?language=en_USlog in, you will see the option to create a call me request and one of our agents will contact you as soon as possible. They can guide you with the set up of LastPass in your Mac.