> for some reason the "edit" option is grayed out and I'm unable to select.
Do you already (or still) have the part file open in the background behind the assembly?
Close the ipt file.
You can Project Geometry or Copy Object surfaces of other parts for reference in making/editing your part in the context of the assembly, but I recommend this technique be reserved for a time when you have more experience with the software.
This stuff should have been covered in your training. Post back if you can't figure it out.
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