Participants to the project should be added on the web application. You can handle there all the access rights and visibility of the different participants.
On the mobile apps, you can consult the data.
To see the participants of your project and / or list you have to click on participants icon
It opens the participants window
Contact the person quickly from AproPLAN by clicking on :
to send him/her an email
The email is information that need to be filled in when you add a new participant to your project on the web app.