Although setting up Work hour templates in Field services isn’t that hard but it isn’t very intuitive either.
The first step is to configure work hours for one of the Resources in the system.
Once you are done configuring work hours for a resource, you can go to Work hour templates in Resource scheduling and create a new template using the resource you just configured in the previous step.
Next step is to apply the template to the resources in the system.
PS: You can apply the work hour template to maximum of 25 resources at a time, if there are more than 25 resources you’d have to do it in steps 🙂