The "HCO calls" layer displays the number of visits to institutions made by users during a specified period.

To apply the layer:

1. Enable the "HCO calls" layer.
   

2. Expand the list of users (click the icon).
   

3. Select one or more users from the list and define the period for which you want to display visit data.
   

4. Click the icon to apply the filter.

As a result, the map will display visit points for institutions visited by the selected users (e.g., medical representatives).