If you are uncertain about the duration of a shift, then set a number of hours that you can more or less guarantee, and then indicate how many hours of overtime there might occur. After the shift, you will be able to specify the exact length of the job under "My shifts".

See also the link below on how to change the hours after a shift.

👇

http://faq.chabber.com/en/articles/2446851-how-to-add-extra-hours

Easy!💥

Best regards,
Team Chabber