Behaviour of "Fill in Browser"?

1P_Dave

Thanks for the quick reply, and apologies for the delay in mine.

For some websites, I store the first part of the password in 1P, let it autofill, and then I type in the final part of the password.

For example, if my password* for some website was 38value_puzzle+book, I would store 38value_puzzle+ in 1P. Then, when I go to the website, I click on the username field in the browser and choose the entry from 1P, and let it autofill the username and 38value_puzzle+. Last, I would append book to the password and hit the Enter.

I'd love to replace "click on the username field in the browser and choose the entry from 1P" with "use a keyboard shortcut** like ⌘\".

Thanks,
Sameer

*Not a real password of mine.
**Even better would be "double click my Apple Watch"!