How to increase user session time?

Question

1C-Bitrix

Now users are very often thrown out of their account on the portal.
Left for 15 minutes - the session has expired and you need to enter your login, password and two-factor authentication again.
Tried the following option:
Administrator Panel-Settings-Users-User Groups-edit the group in the displayed list-tab "Security"-Line "Storage period of authorization stored on the user's computer (minutes)" ( https://pastenow.ru/0893b38ac4127ab11b8471d916be2558)
​Administrator panel-Settings-Product settings-Modules settings-Main module-Authorization tab-tick the checkbox "Enable remembering authorization".
Applied to one group - the situation has not changed, the employees of this group are still thrown out.

Answer 1

Yes, there were earlier ticks.
Also increased the default value (authorization storage time) globally in PHP, through the value of the session.gc_maxlifetime parameter (in PHP settings, php.ini file)

Answer 2

In the settings of the main module, check the checkboxes
Extend the session when the visitor is active in the browser window:
Extend the session only for authorized visitors: