All chaplaincies need to follow Diocesan regulations and to keep up to date with training. Different people need different levels of training, but the first level is on line and open to all, including the congregation.
You will find all the information you need on the Diocesan website. There are details of training, who to contact, and the full text of the Diocesan policy and guidance notes.
This is a complicated and important area that everyone needs to know about.