This depends on how your career page is implemented, so depending on this the work is rather straightforward or can be a bit more complicated if for instance multiple parties are involved. We will need to see the implementation first before we can give a proper answer to this. 

After all the codes are installed and validated our developers will enable Recruitment Analytics for the account. From then on you will be able to see your statistics. 

More information on the installation of trackers and different steps can be found here: