# Users: App Users

You can add user(s) per app and apply [user roles](https://docs.stackerhq.com/stacker-classic/permissions-and-security/set-up-user-roles) and [permissions](https://docs.stackerhq.com/stacker-classic/permissions-and-security/configure-a-permission-rule/table-permissions) to them.

## Add Users from an external table

1. Click **Manage users**
2. Click **Choose Table**
3. Choose a table with your users
4. Select the email address field
5. Select [manual](https://support.stackerhq.com/hc/en-us/articles/4409591836179#h_01GWTA38NB562KZFKHQV2MG1N8) if you want to manually toggle on certain users
6. Select [automatic](https://support.stackerhq.com/hc/en-us/articles/4409591836179#h_01GWTA3K7W5M217BTMFARDA6Y9) if you want to import the whole list
7. Click Save

![Screen\_Recording\_2022-06-22\_at\_17.05.23.2022-06-22\_17\_08\_03.gif](https://support.stackerhq.com/hc/article_attachments/7188383769363/Screen_Recording_2022-06-22_at_17.05.23.2022-06-22_17_08_03.gif)

To remove, click on the cog next to the table and press disconnect

## Add Users directly into Stacker

If you do not have a user table you can add users directly into Stacker.

1. Click **Manage users**
2. Enter their email address
3. Select a role
4. Click **Invite**
5. Remove the user by clicking the 3 dots '...' next to their email address
6. Change the role of the user at any time by selecting the role dropdown

![app\_users.gif](https://support.stackerhq.com/hc/article_attachments/7188502577427/app_users.gif)

* You cannot have multiple external user tables
* You cannot invite users directly into Stacker on top of an external user table