You can use external services such as Microsoft Excel and Microsoft Outlook to work with tasks in Bitrix24.
Export tasks to Microsoft Excel
To export the task list to Excel, go to the Tasks and Projects section, click the gear icon and select the Export to Microsoft Excel option.
After that, the file with all your active tasks will be unloaded. The table columns will display the fields selected in the task list.
If you want other fields to be displayed, include them into the task list view.
Synchronize tasks with Microsoft Outlook
You can work with your tasks in Outlook. Click the gear icon and select Synchronize list with Outlook.
Go through all setup steps and your tasks will be synchronized.
Create tasks in Outlook
Click the Create task button in the upper left corner.
Make the necessary settings for the created task. Be sure to specify the person responsible for the task.