Once you have selected the job/s that you want to apply for, there are two types of Apply options available to you:
Single Apply with Single Apply, you can apply for one job at a time. This option enables you to view the complete job specifications before applying.
Multiple Apply with Multiple Apply, you can apply for more than one job at a go. All you have to do is to select the jobs you want to apply for. Clicking on the apply button enables you to send your responses to the recruiters simultaneously.