Log in to the HTML5 client.
Select the Work workspace, Gantt tab.
Select a project in the Project Data Selector.
DO NOT SELECT ANY TASKS.
In the Project Problems panel, Attributes section, select the baseline number in the Current Baseline field pick list.
Tip
The user can also change the Current Baseline in the Manage Baselines dialog box by clicking on a Baseline number. The current Baseline number is displayed in blue, while the other baselines display a grey number.