How to Inlcude Gradle custom Jars in build output dir?

Hello, I am new to Grable. I need help on how to include jars into build dir that were produced by Jar tasks in gradle file ?

I have 10 jar tasks in and I would like to include them build output dir when ever I build the project. currently it is not including all 10 jars . only one jar with root project name. appreciated the help.