Go to Assets >> Non-IT and select the required asset type. This opens the asset list view page.
Click the Title of the asset to be attached with a component. This opens the asset details page.
Under the Relationships tab, click Add Relationship >> Attach Component(s). The Attach Components window pops up.
Select the components from the given text field. You can further drill down the list of components by component type and asset state using the filters provided.
Click Save.