Some websites, e.g. openair require more information than username and password, in the case of openair the companyid.
The current way to login to openair is letting the extension fill my username and password, and then enter the companyid.
When editing an item, I can add an additional field. Not one, that “just” stores information about the item, but a field that relates to the login process.
For example for the new field, I hover with the mouse over the webpage, click on the corresponding field, and the vault would store its tag (e.g.
<input type="text" class="input-block-level" name="account_nickname" id="input_company" placeholder="Company ID" value="">) with my value for this field