As you said that you want to download the admit card for IBPS RRB so below I am telling you process for this:

Firstly login to the official website of IBPS



On this home page click on CWE RRB



This page will open, here search for admit card link and click on it

Enter all the details which is demanded by the page and then after click on Submit Button

The admit card will display on the screen download it and take a print out of it