When I create a task from Task tab, I can assign task to multiple users.
But when it comes to any record page, and I try to add new task from related list, Salesforce not allows to add multiple users in Assigned To field.
I found there's an idea Cannot assign multiple users to task from record page in lightning in IdeaExchange. Why salesforce not delivering this feature for record page as well? Do I need to go for lightning component to achieve this feature?