How to search lookup based on other attribute in Dynamic CRM

 Using the lookup, we can search records by typing in the search keywords to filter the list.

This search is performed on all fields that are listed in the Find columns in the Quick Find View of the entity.

Below are the steps in Power Apps or UCI Settings.

1] Navigate to the respective entity and click on views and edit Quick Find view for that entity.

2] Edit find table columns and select the columns that are required for search.

Here is the same we can achieve in Classic mode as well.

1] Navigate to the respective entity and click on views and edit Quick Find view for that entity.