When creating a project, there are three different project types you can chose from:
Billable: select this type for projects you can bill to your customers or to another organization in your company.
Non-Billable: select this type for internal initiatives that cannot be billed to another company, typically activities such as sales, pre-sales, meetings, internal trainings etc.
Time-Off: create time-off projects to represent your team’s vacation time, days off, illness and more. Time-off can also be used to track part-time employees.
When selecting time-off as project type, you will notice icons are proposed instead of colors. This helps you to immediately differentiate time-off projects from the others.