Select a project you want to share and click on the avatar icon. Continue to Manage users and a window for managing users for this particular project appears. You can add as many users as you want and assign them different roles.
If the person you want to invite is not an existing sciNote user, follow the link Invite users below. You get redirected to the management board of your team. Click on the green button Invite user. Type in one or multiple emails of people you want to invite. Finish the action by clicking the Invite user/s button and assign them a role.
An email with instructions on creating a free sciNote account will be sent to them.
To learn more about sciNote user privileges and roles watch this video tutorial.