Yes, you can! You can join conference calls by dialing through the InnoCaption app just as you would with your regular phone dialer. Once you are connected to the conference call line, you can enter the conference ID number using the built-in keypad from the caption screen - access the keypad by pressing the button at the bottom of the screen to the right of the red call disconnect button.
If you are making conference calls and would prefer to use a landline telephone or conference speakerphone (together with colleagues), we also recommend you take a look at the article below explaining how to forward your call audio to a landline device.