Hi, and welcome to the forum.
@jenny@zen has pointed you to the thread where May starters are putting their names, and
@trecile has given you another avenue to follow-up.
Here on the forum, people might make arrangements through private Conversations, but it is probably more common to recommend that you start out on your own in order to maintain your independence. The last thing you want is to be obligated to someone you hardly know. In May there will be many people starting at SJPP and other points along the Camino. By going "alone" you can get to know people a little bit, make day by day arrangements - just leave the albergue with others in the morning and chat at the first coffee stop. Walk together or spread out a little bit, say hello again at the next rest stop, walk for 10 minutes with someone, and then with someone else. Everybody chats in the albergues and dinner places. Groups form very easily but can be very flexible too.
I have added a tag at the top of this thread, under the title - "camino family/friends". Click on it and you will find other threads with that tag.