So what you are saying Ninja, is identify the employee and state his or her skills
Yes. I suggest that this is required under identifying training needs and competence...though I recognize that opinions vary widely on the topic.
By "skills" (in my world anyway) it means specific tasks....not "he's a great machinist in every respect".
If your lathe operator is really conscientious...and you don't have lathe work for them, so you train them to make Part "a" on an end mill...but nothing else...
That employee is trained to make Part "a"...but not necessarily trained for all end mill usage...
Y'all have to decide how granular your needs are. And track "training" accordingly.
We had technicians trained to do steps 4&5 of a 15 part process...because that's where the bottleneck was. They were not trained to all 15 steps...just steps 4&5. They did a whole different process 98% of the time, but in the downtime, they could pitch in for those two steps and help out another group. Again...it is all about how your company chooses to operate.