# Add your team

Invite office staff and engineers, choose what each person can do, and record the certificates your engineers hold.

Everyone signs in with their own email address. You invite them and they choose their own password.

## Invite someone

1. Open **Settings**, then **Users**.
2. Select **Invite user**.
3. Enter their **Email address**, **Full name** and **Mobile number**.
4. Choose a **Type**:
   - **Office staff** for anyone using Sustainable ERP on a computer.
   - **Engineer (mobile app)** for people out on jobs. They use the engineer app, not the website.
5. Choose their **Roles** and **Branches**. See [Roles explained](/settings/roles-explained/) if you're not sure.
6. Select **Invite user**.

They get an email with a link to set their password. If it doesn't arrive or runs out, open their menu and choose **Resend invitation**.

:::caution[Emails not arriving?]
Sustainable ERP needs an email service connected before invitations go out. If nobody receives their invite, see [Emails aren't arriving](/help/emails-not-arriving/).
:::

![The Invite a user form with email, name, type, roles and branches](../../../assets/screens/invite-user.png)

## Record engineers' certificates

If some jobs need a ticket (Gas Safe, F-gas and so on), record who holds what. The planner then warns you before you book someone without it.

1. In **Users**, open the engineer's menu and choose **Skills & certificates**.
2. Select **Add skill**, pick the skill and enter the expiry date.

An expired certificate counts as missing. Add the list of skills first in **Settings → Skills**.

## Next

[Add your first customer and site](/start/add-your-first-customer/)