Runn doesn’t use timezones and instead uses days of the week.
When someone is scheduled “Monday to Friday” it means they are working “Monday to Friday” in their own timezone.
Example
I scheduled Priscilla to work Monday to Friday.
When she logs in - Runn says she is working Monday to Friday.
When I log in - Runn says she is working Monday to Friday.
In reality for me, she is working from Tuesday to Saturday.