Help requested: new format style

I would like to create a citation style that would output only the first author, date, and abstract. I’ve tried figuring out the edit tool in citationstyles.org, but it’s too much for me. Can someone with more skill than I have give me instructions? Many thanks in advance!

Like this?

How did you do that?

You can build you own styles or modify existing ones, https://editor.citationstyles.org/visualEditor/ helps with that.