You can either create a Library or embed the part in your project file. Creating a Library is the smart way to go if you'll be using the object in more than one project. Libraries can be loaded and parts embedded via the Library Manager: File > Libraries and Objects > Library Manager...
MacBook Pro Apple M2 Max, 96 GB of RAM
AC27 US (5003) on Mac OS Ventura 13.6.2
Started on AC4.0 in 91/92/93; full-time user since AC8.1 in 2004