To manage who has access to your workspace:

1. Go to Settings → "Toegang en boekhouder" (access and accountant)
2. Review current members and roles in the "Mensen met toegang" (people with access) section
3. Use "Iemand toegang geven" (give someone access) to invite a teammate by email
4. Open the Manage access button or gear icon on a member to set page access

Permissions are managed per page with Read, Write, and Create options. Inviting team members requires the Pro plan; the accountant section on the same page is free on every plan.