Hi Denis,
CRM 7.0 version and above provide multi session functionality where Agent can work more than one session shimultaniously up to 6. If it is implemented you can have multiple session in this way you can work multiple object on Webui. or else you need to wait till fact sheet get launchs no other option.
In any other way in case you optimize uploading og .PDF will be helpfull for your case.
Thanks,
Prem