Creating a large group on WhatsApp is a straightforward process. Here are the steps:

1. Open WhatsApp on your phone.
2. Tap on the “Chats” tab.
3. Tap on the “New Group” button.
4. Select the contacts you want to add to the group. You can select multiple contacts by tapping on each of their names.
5. Once you have selected all the contacts you want to add, tap on the green “Create” button.
6. Type in a group name and add a group photo if you want to.
7. Tap on the green checkmark to create the group.

Keep in mind that WhatsApp has a limit of 256 members per group. If you want to create a larger group, you can consider using other group messaging platforms such as Slack, Telegram, or Facebook Groups.