diff --git a/README.md b/README.md
index 8ad6038..43d0033 100644
--- a/README.md
+++ b/README.md
@@ -14,8 +14,134 @@ By default, TES Remote Programmer is configured to work with the [DoorKing (DKS)
 
 ![Main Activity](images/screenshots/main_activity_framed_small.png)
 
-In the main activity screen enter the entry system's phone number and master code, then select on the programming options.
+In the main activity screen enter the entry system's phone number and master code, then select one the programming options.
 
 ![Programming Activity](images/screenshots/add_phone_number_framed_small.png)
 
-In the programming activity screen fill out the fields and click the ![Dial](images/call_fab.png) floating button (if available) to dial the programming in or the ![Dial](images/dialpad_fab.png) floating button to view the manual steps.
+In the programming activity screen fill out the fields and click the ![Dial](images/call_fab.png) floating button (if available) to dial the programming in or the ![Dial](images/dialpad_fab.png) floating button to scroll through the manual (keypad) steps.
+
+## Configurations
+
+![Configurations](images/screenshots/configurations_framed_small.png)
+
+To switch configuration, choose `Configurations` under the toolbar menu and select the desired configured.
+
+To import a new configuration, select `Import` in the _Configurations_ dialog.
+
+### New Configurations
+
+Custom configurations can be created using [JSON](http://www.json.org/). 
+
+[View Example](app/src/main/res/raw/dks_1802_epd.json)
+
+#### Parameters
+
+First defined the global parameters:
+
+```json
+"params": {
+  "name": "DKS 1802-EPD",
+  "star": "*",
+  "hash": "#",
+  "end": "0 + #",
+  "size": 4
+}
+```
+
+| Parameter  | Description                                                                                      | Required |
+|:-----------|:-------------------------------------------------------------------------------------------------|:---------|
+|`name`      | The configuration name.                                                                          | Yes      |
+|`star`      | The key used to start, acknowledge or terminate programming steps. Most systems use the `*` key. | Yes      |
+|`hash`      | They key used to in place of numbers when applicable. Most system use the `#` key                | No       |
+|`end`       | The end programming manual sequence. For example DoorKing uses `0` and `#` pressed together.     | No       |
+|`size`      | The size (number of digits) of the master code. Most systems use 4 or 5.                         | Yes      |
+
+### Options
+
+Second defined options. These defined the data used to create programming activity screens in the app.
+
+For example, the system's manual would list the steps to Programming 7-digit Phone Numbers as something like:
+
+1. Press *01 and enter Master Code.
+2. Enter a Directory Code then press *.
+3. Enter a 7-digit Phone Number then press *.
+4. Press 0# TOGETHER when finished.
+
+which would translate into:
+
+```json
+"opts": [
+  {
+    "title": "Add 7-digit Phone Number",
+    "fields": [
+      {
+        "hint": "Directory Code",
+        "size": 3
+      },
+      {
+        "hint": "Phone Number",
+        "size": 7,
+        "hash": true
+      }
+    ],
+    "dtmf": "*01[MASTER],[FIELD:1]*,[FIELD:2]*"
+}
+```
+
+| Options | Description                                                                              |
+|:--------|:-----------------------------------------------------------------------------------------|
+|`title`  | The title of the option.                                                                 |
+|`fields' | See (#Fields)                                                                            |
+|`dtmf`   | See (#DTMF)                                                                              |
+|`nodial` | Indicated the remote programming is not available. Steps must be executed at the keypad. |
+
+All are required, except `nodial`
+
+#### Fields
+
+```json
+"fields": [
+  {
+    "hint": "Directory Code",
+    "size": 3
+  },
+  {
+    "hint": "Phone Number",
+    "size": 7,
+    "hash": true
+  }
+]
+```
+
+Fields represent the data entry text field on option screens.
+
+| Element | Description                                                                           | Required |
+|:--------|:--------------------------------------------------------------------------------------|:---------|
+|`hint`   | Set the hint/label of the field.                                                      | Yes      |
+|`size`   | Set the required size of the field.                                                   | Yes      |
+|`min`    | Set the minimum value of a numeric field.                                             | No       |
+|`max`    | Set the maximum value of a numeric field.                                             | No       |
+|`alpha`  | Set to `true` if the field is alphanumeric.                                           | No       |
+|`hash`   | Set to `true` if the field accept the (#Parameters) `hash` value in place of a digit. | No       |
+
+
+#### DTMF
+
+```json
+"dtmf": "*01[MASTER],[FIELD:1]*,[FIELD:2]*"
+```
+
+DTMF represent the dialing sequence for the programming steps. A comma (`,`) can be used to specify a pause in the dialing sequence.
+
+The following markers will be substituted by their actual values upon dialing.
+
+| Marker     | Description                                                                   |
+|:-----------|:------------------------------------------------------------------------------|
+|`[MASTER]`  | Substituted with the Master Code                                              |
+|`[FIELD:X]` | Substituted with the field's value, where X is the field number in the array. |
+
+#### Validation
+
+Imported configurations will be validated. While the validation is not perfect, it should be good enough to spot most syntax errors. Please sure to use a JSON editor to make the whole process of creating configurations a whole lot easier. When in doubt be sure to look at the [default configuration](app/src/main/res/raw/dks_1802_epd.json).
+
+
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