Xcode : Adding a project as a build dependency

Under TARGETS in your project, right-click on your project target (should be the same name as your project) and choose GET INFO, then on GENERAL tab you will see DIRECT DEPENDENCIES, simply click the [+] and select SoundCloudAPI.

Tough one for a newbie like me - here is a screenshot that describes it.
Xcode 10.2.1

1. Select your project in the navigator on left.
2. Open up the drawer in the middle pane and select your target.
3. Select Build Phases
4. Target Dependencies is an option at that point.

To add it as a dependency do the following:

• Highlight the added project in your file explorer within xcode. In the directory browser window to the right it should show a file with a .a extension. There is a checkbox under the target column (target icon), check it.
• Right-Click on your Target (under the targets item in the file explorer) and choose Get Info
• On the general tab is a Direct Dependencies section. Hit the plus button
• Choose the project and click Add Target