minutesSpent predefined

minutesSpent predefined

Hi,

We are using Time Tracking and we want to pre-define options which Agents can choose from.
We only enter time in 0 / 15 / 30 / 45 minutes format. If we work 1 hour for a customer it is 1 hour 0 minutes.
If we work 1 hour 05 minutes then it's 1 hour and 15 minutes.

We cannot find an option to pre-define these values nor can we put a Validation Rule on minutesSpent.

Already send an email to support mailbox begin april but never got a usefull response.