You can convert an existing inventory item into an assembly item directly from the item list in ConnectStock.
Steps
Go to the item list in ConnectStock.
Click the three dot menu next to the item you want to convert.
Select Convert to Assembly.
Requirements
Only an inventory item that is not already part of an assembly can be converted. If the item is already used as a component in an existing assembly, it cannot be converted, since it is tied to a different assembly.
