Hello Salesforce Ohana,
I have created two custom Objects.
Job Post
Job Applicants - Junction Object ( Two Lookups contact and Job Post )

I want to first show List of contacts with the option to select them which can be possible by Datatable with Selectable rows

after that when I click on Next I want to show a list of Job posts and I want to assign selected contacts to selected jobs and create new records of Job Applicants.

Looking for some guidance/steps as I am new to lightning and recently started creating components