ES Search on text field

I noticed that the Dating Search module lets you search on four fields (Name, Gender, Age, and Distance).

I am not using ES as a dating site, so I have a custom field named Skills which I want to be searchable.

Questions:

1. Since I made Skills a text field like Name, is there some way to add it to the Dating Search module? (If it's a simple hack to replace the Name field with the Skills field in php, let me know!)

2. If the custom field is defined as Searchable, what does it mean, since it does not appear in the Dating Search module? Does it only appear in the filters advanced search?

Thanks!