Identities are the accounts (sources) you use outside of The Linux Foundation to contribute to a Linux Foundation project. An example would be your GitHub account that you use to submit code to a Linux Foundation project. For more information on how to add or update Identities, visit this page. https://docs.linuxfoundation.org/lfx/my-profile/update-identities
Affiliations allows you to 'affiliate' your contribution to an organization, or to yourself as an individual, during a specified time frame. This can currently only be done in the Community Management tool. If you need to update the affiliation of your contributions, you may open a support ticket.