Hello @steve_troy,
Welcome to the LastPass Community!
I apologize for the inconvenience this is causing you. I passed a request for this option to be added in the LastPass browser extension as you can find it in the vault, hopefully we will get this option enable as soon as possible.
Kind Regards,
Alejandra
I will add on to this. If you are creating a new password in the iOS app you can fill out everything but generate a password. I'm not going to go out generate one copy it then go back and create a new entry. That seems like a waste. Why not have the option all in one place. The apple password app lets you do it. but something we pay for is lacking that simple option.