... implement two-way sync. That is, when events in the Bitrix24 calendar are added or changed, these changes are displayed on the Apple device, and vice versa.
Also, users can add all the contacts to their devices and find data about any colleague at any ... ... device, click Settings and select Mail, Contacts, Calendars>Accounts.
Click Add Account.
Select Other > Add CalDAV Account.
Specify your Bitrix24 address as server (<your_domain>.bitrix24.com). Use your login and password....