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 2.4 GHz Intel Core i9, 32 GB of RAM
AC25 US (3011) AC24 on Mac OS Catalina 10.15.7