Action Details
Requirements and how-to articles for Twitter's action:

paid action
Promoted Trends show users time-, context-, and event-sensitive trends promoted by advertising partners. (Note: Promoted Trends are currently unavailable for self-serve advertisers, and are generally more suitable for larger companies than smaller ones.)

You need this to get it done:

Twitter Ads Account
A Twitter Ads account is required in order to create a Promoted Trend.
A Trend to promote.
Can contain letters and numbers. Punctuation, symbols and spaces cannot be used.
Avoid excessive capitalisation.
Maximum of ~20 characters (since not every character is the same width, the actual character limit may vary slightly.)
Target Location
Choose the location (e.g. country/city) you wish to target.
A Promoted Tweet which is displayed at the top of the page when a user clicks on the Promoted Trend.
Promoted Trends currently cost $200,000 (USD) per day.
Requirements missing or found errors? Report

How-To Articles
A list of useful links for you:

Twitter Business - What are Promoted Trends?
Official information on Promoted Trends.
Twitter Business - Promoted Trends guidelines
Official editorial and content guidelines for Promoted Trends on Twitter.
Link missing here or found errors? Improve How-Tos