In case of Combo Ticket (event ticket + Membership), please refer to the below-mentioned steps:
Login // event // Manage // event Setup // Tickets or Registration // Option // edit // Enable Membership settings and Validations // Select the plan under Add Attendees to your Group Membership // Submit // Save
As and when someone selects this type of Combo ticket/ registration & successful pays online, the data automatically moves to the Membership (Group) Dashboard. This is applicable only for new Joinee.
You can refer to this article for further details: https://www.explara.com/help/229/existing-member-combo-ticket-will-membership-renewed-also?mid=