How to invite a collaborator?

To invite a collaborator, you need to go to the user's menu (your avatar) and click on the "Collaborators" button. 

You can't invite a collaborator who's e-mail is already used by Mewo as an account owner or as a collaborator from another organization. If you need to invite someone who has already set up a Mewo account, he will need to use another e-mail address or delete his account prior to your invitation.