It would be very useful to be able to customize two-factor authentication, that is, entering information such as Issuer, Account, Secret Key, Algorithms, Digits and Token Periods.
Here is an example screenshot (captured by the Keeper password manager):
The informational fields of Issuer and Account would be nice to have. The Algorithm, Digits, and Token Period would be more significant to have if any of that changed from the defaults. I can only guess that some of those details would change in the future.
Sidenote: I changed the title of this Feature Request from “Customize two-factor authentication (TOTP)” to “Integrated authenticator: GUI to customize parameters of TOTP seed codes / authenticator keys”.
Oh, great! Anyway, I’m a developer too and I’m very well familiar with JS/TS. I’ll be glad to work on the remaining part of the feature. Let me know if you need some help.