...
To add an inventory item, click the Add or Pick button (refer to Using the pick operation). In the Item column, select an item from the Items list or create a new item. For more details, refer to Items. Alternatively, you can import the list of items with all the details from an Excel document. For this, click the 
button on the table toolbar and follow the step-by-step instructions in the appeared window.
The Characteristic column is available if the Enable Item Characteristics option is selected on the Administration > Settings > Purchasing and Warehouses form. In this column, you can specify additional properties (such as size, color, and so forth) of each listed item if the Use Characteristics option is selected for the item in its master record (see Items).
The Batch column is available, if the Enable Batches option is selected on the Purchasing and Warehouses form. In this column, you can specify the batch (lot) number for the items for which the Use Batches option is selected. Generally, you must specify batch numbers for items with expiration dates, items received from consignment or third-party contract warehouses.
...
The tab toolbar buttons
Use the Up and Down ( 
) buttons to rearrange the items in the list.
The Set Components button on the table toolbar is available if the Use Sets for Sales option is selected on the Administration > Settings > Purchasing and Warehouses form). This button is enabled only for items of the Set type (for details, see Items). For each item which is a set, you can select the Specification. To view a list of the set components, click the Set Components button on the toolbar – this opens the Set Components dialog box (below in the topic).
...
You can use this dialog box to select the specification for an item which is a set.
The Set Components dialog box
...