See also: Part, Alternates, Revisions
Add Alternate Part enables you to add an alternate part to a specific part so that, it can be used as an alternate during part crisis.
Steps:
On the Part docked split container,
in the Details node, click Information.
In the workspace, select Alternates tab.
On the ribbon bar, in the Alternates
group, click Add Alternate
Part.
In the Lookup Part select box, select appropriate alternate part.
Click Select and Close.