Head to your dashboard.
Click on Team under Settings.
Select 'Invite team member'.
Enter their email and assign one of the roles below.
Role Permissions
Owner: Access to and can view everything on the dashboard.
Admin: Access to and can view everything except for Payouts, OAuth Settings, API Keys, and Webhooks. Also, they cannot export the Payments table.
Sales Manager: View only access to Users and Checkout links without the ability to export those tables.
Moderator: No access to the dashboard, but can ban and mute users in chats.
App Manager: No access the dashboard, but can manage your apps from your overview.