How to run jobs in sequence? the jobs has common tag

How to run jobs in sequence. My problem statement is: i have multiple jobs(in sequence like 1.1, 1.2, 1.3…) with same tag. We have a setup on slack which run the jobs with that tag on AWS machine. But what is happening, the jobs are running in parallel means 1.1, 1.2 and 1.3 are running at same time and this is leading to test case failing as job 1.2 should only run after 1.1 and 1.3 should run after 1.2 and so on.
Can somebody please help how to run jobs in sequence bearing same tag.