Update README.md

README.md

@@ -71,6 +71,52 @@ Linux distributions.
   [Instructions](doc/INSTALL.md)
 
 
+# Device Management
+<!--- --------------------------------------------------------------------- --->
+To edit device information:
+  - Select "Devices" in the menu on the left of the screen
+  - Find the device you want to edit in the central table
+  - Access the device by clicking on the name or status
+  - Activate the "Details" tab of the device
+  - edit device data
+  - Press the "Save" button
+
+### Main Info
+  - **MAC**: MAC addres of the device. Not editable.
+  - **Name**: Friendly device name
+  - **Owner**: Device owner (The list is self-populated with existing owners)
+  - **Type**: Select a device type from the dropdown list (Smartphone, Table,
+      Laptop, TV, router, ....) or type a new device type
+  - **Vendor**: Automatically updated by Pi.Alert
+  - **Favorite**: Mark the device as favorite and then it will appears at the
+      begining of the device list
+  - **Group**: Select a grouper ('Always on', 'Personal', Friends') or type
+      your own Group name
+  - **Comments**: Type any comments for the device
+
+### Session Info
+  - **Status**: Show device status : On-line / Off-Line
+  - **First Session**: Date and time of the first connection
+  - **Last Session**: Date and time of the last connection
+  - **Last IP**: Last known IP used during the last connection
+  - **Static IP**: Check this box to identify devices that always use the
+      same IP
+
+### Events & Alerts config
+  - **Scan Cycle**: Select the scan cycle: 0, 1', 15'. Some devices do not
+      respond to all ARP packets, for this cases is better to use a 15' cycle.
+      ***For apple devices I recommend using 15' cycle***
+  - **Alert All Events**: Send a notification in each event (connection,
+      disconnection, IP Changed, ...)
+  - **Alert Down**: Send a notification when the device is down
+      *(userful with "always connected" devices: Router, AP, Camera, Alexa,
+      ...)*
+  - **Skip repeated notifications during**: Do not send more than one
+      notification to this device for X hours
+      *(useful to avoid notification saturation on devices that frequently
+      connects and disconnects)
+
+
 ## Other useful info
 <!--- --------------------------------------------------------------------- --->