permission page and modify css

content/self-host/pro/permissions/_index.en.md

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+---
+title: Permission Control
+weight: 15
+---
+
+
+## Device access permissions
+There are two ways to associate a device with a user:
+- Via console device page
+- Log in to the specified user account on the client side
+
+The following two situations will prevent the device from being accessed:
+- Make device `disabled` in console devices page
+- Make user `disable` in console user page
+
+The associated device can only be accessed by the devices of the same user or user group, or in correct cross-group settings.
+
+## Cross group settings
+
+Please go to group page in the web console, click on `Edit` to edit cross group settings as below.
+
+Your modifications to `Access with other groups` take effect immediately without requiring you to click the `OK` button.
+
+Both `Can access to` and `Can be accessed from` serve almost the same function, we provide both options for your convenience. However, this may cause some confusion.
+
+![](/docs/en/self-host/pro/permissions/images/crossgrp.png)