Add ads: single creatives, carousels, existing posts

The Add Ads wizard turns your creatives into ads. You pick where they go, the ad format, the creatives or posts, and the copy, and Koast builds the ad sets and ads in your draft.

campaigns

Status	Name	Budget	Spend	CPR	Results	CTR	ROAS	Actions
Draft	2026/09/19 \| PUR \| Vela Daily Greens \| CBO	$1,500/day	-	-	-	-	-	Campaign Settings Multi Account Launch Delete Campaign

Before you start

Start a campaign and open it in the builder. See Start a campaign.
Upload the images and videos you want to use to your creative library. See The creative library.

Add ads

Open the wizard
In the builder toolbar, select + Add Ad Set.
Configure Ad Creation
Pick the Ad type: Single Creative, Carousel or Existing Post.
Choose the ad sets
Choose One ad set per creative or a Fixed amount of ad sets, then select Next.
Select Creatives
Pick the images and videos from your library. For a carousel, this step is Build Carousel Ad. For an existing post, it's Select Posts. Select Next.
Copy Settings
Choose how the copy is written, pick the destination and call to action, and fill in the fields. See Write ad copy.
Create Ads
Select Create Ads. The new ad sets and ads appear in the builder as drafts.

Ad types

Type	What you get
Single Creative	One image or video per ad.
Carousel	2 to 10 cards in one scrollable ad. Drag the cards to reorder them. The first card shows first.
Existing Post	Reuses a published post, with its likes, comments and shares. Meta

How many ad sets

Option	What happens
One ad set per creative	Each creative gets its own ad set. The number of ad sets follows the creatives you pick. For carousels it reads One ad set per ad, and for posts One ad set per post.
Fixed amount	You set the number of ad sets.

One ad set per creative gives you a clean read on each creative. Putting all ads in fewer ad sets lets the ad platform spread the budget across them.

Add ads to an ad set you already have

Open the Ads tab of the table. To pick the ad set, tick it on the Ad Sets tab first; otherwise Koast uses the first ad set.
Select + Add Ad. The wizard opens straight on Select Creatives, for single image or video ads.
Pick the creatives, set the copy and select Create Ads. The new ads go into that one ad set.

To add a carousel or an existing post, use + Add Ad Set instead.

Use an existing post

campaigns

Status	Name	Budget	Spend	CPR	Results	CTR	ROAS	Actions
Draft	2026/09/19 \| PUR \| Vela Daily Greens \| CBO	$1,500/day	-	-	-	-	-	Campaign Settings Multi Account Launch Delete Campaign

An existing post keeps its social proof, so the ad starts with the engagement the post already has.

In Configure Ad Creation, pick Existing Post and select Next.
In Select Posts, use Select from Grid to pick posts from your pages. Posts that can't be promoted are greyed out. Hover one to see why.
Or use Enter Manually and paste post IDs in the format pageId_postId, for example 123456789_987654321. Separate several with commas, spaces or new lines. They must all come from the same Facebook Page.
Select Next and finish the copy settings.

An ad built from a post uses the post's own copy. Only enter an ID by hand if you know the post can be promoted, or the launch can fail.

Good to know

Instagram shows the first 5 cards of a carousel. With more, Koast warns you that the rest won't appear on Instagram.
There's a cap on ads per creation, and it depends on your plan. If you go over it, Create Ads stays greyed out and tells you to reduce the creatives or the variations per creative.
You can skip the creatives step (except with one ad set per creative) and add creatives to each ad later in its settings.