There are several ways to collect data.
The first one is to simply position yourself on the desired line and enter the value as shown below (circled in red).
For the second way, you must first press the "edit" button (at the end of the line). You will then just have to fill in your data with the desired value.
You can also indicate the reliability of the value, add a comment (for example: recovered in the year 2021) or attach a file (in particular the source file of the value).
Once the value has been entered, a green tick will appear on the data line in the status field to confirm the value recorded.
It is also possible to "bookmark" the value (circled in black below). This bookmark will allow you to return to the value later at a glance.
Finally, you can move from one data item to another using the arrows on the side.