To customize your Phone Calls:
Go to Channels > Choose the Phone Calls tab
The first thing you need to choose is:
- The colour for the sides of your phone call (specially if your exercise is running in a tablet or laptop)
- The background colour for your phone calls.
- A logo, only if you want to.
The second step is to choose a colour/style four your "accept" or "reject" buttons:
It is also possible to upload your own button designs: 