The system requirements for the co-presenter will be the same as the ones for the main presenter.
Click here for the system requirements for the presenter.
The required upload speed for broadcasting a webinar with multiple hosts will multiple with the number of hosts. The minimum required upload speed for the main host in a webinar with multiple hosts is about 125 kilobytes per second (1 Mbps).
The extensive system requirements for broadcasting with multiple hosts can be found here.
The most important thing is that both presenters use Google Chrome as their browser and close all other software.
Note! Test and practice the option thoroughly in advance together with your co-presenter. Test with the same setup as you’d use for the live webinar, so you won’t encounter any surprising technical issues during the live webinar.