Here is a quick video on how to glue in bowling inserts and what to do if you accidentally get excess glue on the bowling ball.
With more and more people doing pro shop work at home, glue grips in can be tricky for even advanced bowlers. I use Insta Cure Plus glue to glue the grips in. This glue sets pretty quickly. Important to not use a lot of glue. A small pin head worth of glue will spread out and secure the grip. Plastic balls will take more time, and sometimes more glue.