Zoho Connect Custom Apps

Zoho Connect Custom Apps

Hi!
My company has an Enterprise subscription of Connect. I tried to use Leave Tracker from Custom Apps Gallery.
When I add an Employee (a member of the company), I get an error "Share Tasks are not allowed on Connect Accounts".
What does it mean? What am I doing wrong?

The script inside the app tries to assign the employee to a permission group "manager" (if it's a reporting_to employee) or "employee" (if it's a regular employee).