Where can I book a new time entry for a customer or project?

Time entries are managed in Action Steps. They can belong to Tasks, Tickets or Accounts.

Let's create a new action step and see how we associate it with other entries. First open the Action Steps app and create a new one.

For the main association you can choose tasks, tickets or accounts.

You can't associate an action step directly to a project. You need to associate action steps to existing tasks within a project or create a new task in advance.

After creating the action step you can book time entries as Effort. The only way to record working time is by action steps.

Now take a look at the assigned objects, which you can see on the right side. The effort shown in a task is the sum of all associated action step efforts.

And the effort shown in a project is the sum of all associated task efforts.