A. No, you can only choose one seed segment to train a model with.
You are able to select which of your first-party segments you want the LAL model to be trained on.
Example: If you are building a lookalike model on top of your declared female users to identify other users who are likely to be 'Female' you may want to train this model excluding your male declared users.
For more information on setting up a Lookalike Model, please click here.
If you have any questions, please contact customer support by emailing email@example.com or chat to the Customer Operations Team via the LiveChat icon in the bottom right corner of your screen.