Familiar with labels in Planner tasks? Well these are now available in Project for the web to help you tag or categorise tasks:
From the Grid view and Timeline view the labels are available in the Task pane:
Clicking Add label will load the label dropdown menu:
You can use the search feature to filter down the list of labels:
You can edit the label text by clicking the pencil icon:
Editing the label edits the label for the whole project, not just that task.
Add the label to the task by clicking the required label. Multiple labels can be added to one task.
On the Board view you see the labels on the task cards:
From the cards on the Board view, you can use the card menu to add labels:
You also see the label in the Task Pane from the Board view:
With this feature, there were two Tables added to Dataverse. The “Project Label” table that stores the details for the labels in a Project. Data gets added to this table when you click “Add label” for the first time in a project. If you change a label title, that change gets saved in the “Project Label” table. The second table added was “Project Task To Label”, this tables stores the details for the labels added to tasks. If you want to report on the label data, take a look at those tables to get started.
A nice simple feature added to Project for the web to help manage tasks.
Modern Work Management - Project and the Power Platform blog 