When creating using Adext AI to manage an ad group, you'll be asked for which demographics you want to include, exclude and explore, here is what the means:
- Include - Adext AI should always set some amount of budget for this demographic unless it detects very poor performance
- Exclude - Adext AI will not set budgets for these demographics but if you set too many excludes you could significantly reduce Adext AI's efficiency
- Explore - Adext AI will decide when to set budgets in these demographics while it looks for the best audience
For more information on this topic, see: Why should I let Adext AI explore demographics?