Here are some shelf pin options-

Rockler shelf pin jig-
https://amzn.to/40nsnfa

Powertech shelf pin jig-
https://amzn.to/47bYEIs

BigHorn shelf pin jig-
https://amzn.to/49lA8GW

Festool LR32 system-
https://amzn.to/46RNokF

Festool of1400 router-
https://amzn.to/47h9Mnh

LR32 guide rail-
https://amzn.to/45Pyp9G