To boost a Facebook post and promote it to a wider audience, follow these steps:

1. Log In: Log in to your Facebook account and go to the page where you made the post you want to boost.
2. Find the Post: Locate the specific post you want to boost on your page’s timeline.
3. Click on “Boost Post”: Under the post, you should see a “Boost Post” button. Click on it.
4. Choose Your Objective: Facebook will prompt you to choose your marketing objective. Select one based on your goals. Common options include “Get More Messages,” “Get More Leads,” “Boost Your Page,” and more.
5. Define Your Audience: You can customize your target audience by selecting options such as location, age, gender, interests, and more. Facebook allows you to choose the audience that is most relevant to your boosted post.
6. Set Budget and Duration: Decide on your budget for the boost and how long you want the boost to run. You can choose a daily or lifetime budget.
7. Payment Method: Add a payment method if you haven’t already done so. Facebook will charge your chosen payment method based on your budget and duration.
8. Review and Boost: Review your boost settings to ensure they are correct. Once you’re satisfied, click the “Boost” button.
9. Monitor Performance: After boosting the post, you can monitor its performance by going to Facebook Ads Manager. Here, you can see the reach, engagement, and other metrics related to your boosted post.
10. Manage the Boost: If you want to make changes or stop the boost before the scheduled end date, you can do so in Facebook Ads Manager.

Remember that boosting a post is a paid promotion, and the cost will depend on your budget and targeting options. It’s essential to have a clear goal in mind and target the right audience to make the most of your boosted post.