Added PO doc, added note about selecting customer in SO doc

docs/companies/po.md

@@ -10,9 +10,60 @@ To access the purchase order page, click on the <span class="badge inventree nav
 
 ### Create Purchase Order
 
-### Purchase Order Flow
+Once the purchase order page is loaded, click on <span class="badge inventree add"><span class='fas fa-plus-circle'></span> New Purchase Order</span> which opens the "Create Purchase Order" form.
 
-## Line Items
+A purchase order is linked to a specific supplier, select one in the list of existing suppliers.
 
-!!! missing "TODO"
+!!! warning
-	This section requires further work
+	Only companies with the "Supplier" attribute enabled will be shown and can be selected
+
+Fill out the rest of the form with the purchase order information then click on <span class="badge inventree confirm">Submit</span> 
+
+### Add Line Items
+
+On the purchase order detail page, user can link parts to the purchase order selecting the <span class="badge inventree nav side"><span class='fas fa-list'></span> Order Items</span> tab then clicking on the <span class="badge inventree add"><span class='fas fa-plus-circle'></span> Add Line Item</span> button.
+
+Once the "Add Line Item" form opens, select a supplier part in the list.
+
+!!! warning
+    Only parts from the supplier selected for the purchase order will be shown and can be selected
+
+Fill out the rest of the form then click on <span class="badge inventree confirm">Submit</span> 
+
+#### Upload File
+
+It is possible to upload an exported purchase order from the supplier instead of manually entering each line item. To start the process, click on <span class="badge inventree confirm"><span class='fas fa-upload'></span> Upload File</span> button next to the <span class="badge inventree add"><span class='fas fa-plus-circle'></span> Add Line Item</span> button and follow the steps.
+
+!!! info "Supported Formats"
+	This process only supports tabular data and the following formats are supported: CSV, TSV, XLS, XLSX, JSON and YAML
+
+### Issue Order
+
+Once all the line items were added, click on the <span class='fas fa-paper-plane'></span> button on the main purchase order detail panel and confirm the order has been submitted.
+
+### Receive Line Items
+
+After receiving all the items from the order, the purchase order will convert the line items into stock items / inventory.
+
+There are two options to mark items as "received":
+
+* either individually: click on <span class='fas fa-clipboard-check'></span> button on each line item
+* or globally: click on the <span class='fas fa-clipboard-check'></span> button on the main purchase order detail panel and confirm all items in the order have been received.
+
+### Received Items
+
+Each item marked as "received" is automatically converted into a stock item.
+
+To see the list of stock items created from the purchase order, click on the <span class="badge inventree nav side"><span class='fas fa-sign-in-alt'></span> Received Items</span> tab.
+
+### Complete Order
+
+Once the quantity of all __received__ items is equal or above the quantity of all line items, the order will be automatically marked as __complete__.
+
+It is also possible to complete the order before all items were received (or if there were missing items).
+To do so, click on the <span class='fas fa-check-circle'></span> button on the main purchase order detail panel and confirm the order was completed.
+
+### Cancel Order
+
+In the event that the order won't be processed, user has the option of cancelling the order instead.
+To do so, simply click on the <span class='fas fa-times-circle'></span> button on the main purchase order detail panel and confirm the purchase order has been cancelled.

docs/companies/so.md

@@ -10,7 +10,14 @@ To access the sales order page, click on the <span class="badge inventree nav ma
 
 ### Create Sales Order
 
-Once the sales order page is loaded, click on <span class="badge inventree add"><span class='fas fa-plus-circle'></span> New Sales Order</span> which opens the "Create Sales Order" form. Fill out the form with the sales order information then click on <span class="badge inventree confirm">Submit</span> 
+Once the sales order page is loaded, click on <span class="badge inventree add"><span class='fas fa-plus-circle'></span> New Sales Order</span> which opens the "Create Sales Order" form.
+
+A sales order is linked to a specific customer, select one in the list of existing customers.
+
+!!! warning
+	Only companies with the "Customer" attribute enabled will be shown and can be selected
+
+Fill out the rest of the form with the sales order information then click on <span class="badge inventree confirm">Submit</span> 
 
 ### Add Line Items
 
@@ -19,7 +26,7 @@ On the sales order detail page, user can link parts to the sales order selecting
 Once the "Add Line Item" form opens, select a part in the list.
 
 !!! warning
-    Only parts that have the "Salable" attribute enabled will be shown and can be selected in this step
+    Only parts that have the "Salable" attribute enabled will be shown and can be selected
 
 Fill out the rest of the form then click on <span class="badge inventree confirm">Submit</span>