An observation can be created from the plan (it is then positioned by a pin) or from the “Observations” list.

On the plan: open it from “Files”, click “Observations” in the floating toolbar, choose the type, then click where you want on the plan. The creation form opens, already located.

Plan with the Observations toolbar open and the type selection
Choosing the type from the plan toolbar.

From the list: “Observations” menu, “Observation” button, then choose the type. You can locate it later with “Locate on the plan”.

The creation form offers:

New observation window with its fields
The creation form.

“Create” saves the observation; “Create and chain” immediately opens a new one of the same type, handy during a site visit. The observation gets an automatic number and appears in the list, on the plan and in the project's activity feed.