How to add a Date Custom Field to Advanced Search Results

I am trying to do an Advanced Search for all tasks assigned to a group of people. When I look at the results I want to include a custom date field that is in the tasks

In the Advanced Search, when I go to ‘Custom Fields’ my field is not available to select.

If I do the search and click the + to add a field to the results, my field is also not available to choose.

The field is part of the library.

6 posts were merged into an existing topic: Support Date custom field in Advanced Search.