Resuming the test where I left it

I’m sure I’m asking for something basic but I’m new in Katalon.
I have created a first web app test which starts with logging in and then checking a few conditions on the first app page (after login).
Now I need to resume where I left, i.e. add more lines of test. However I do not know how to indicate to Katalon that I need to start on the web app page where I was already at. It seems the test case always brings me back to the login page. What am I doing wrong?