User and password can be specified via Project settings - User administration. The user is always stored in the project, the password in the persistent values as these can also be changed via the control element.
In the properties of the page, you can now select users who should have
access to the corresponding page. If no user is linked, the page is always
visible for all users. If no user is logged in, the first page to which
all users have access is always displayed. If there is no page to which
all users have access, the first page is always displayed, therefore the
first page should always be the one to which all users have access, on
this page the control element for login should then appear.
The first page for the corresponding user then contains the page views,
for example Overview Apartment from which one can switch to the individual
rooms. Since one can only switch to the user's rooms from the start page,
only the start page must always be linked to the user.
Summarized: