Don’t show. Guide them to do it themselves. Never be the one to actually do it beyond the first time.
If they still refuse to learn, make them take notes. Make them read to you their notes from last time. Make them tell you what each step is and means.
Make asking you the hardest option for them to get what they want.
You are helping - they clearly need the additional training, and you’re doing everything you can to supply that. Their job can’t be relying on you.
They shouldn’t (and almost certainly don’t) have delegation authority.
For corporate bingo, the keywords are upskill, cross-training, and bus factor.