Digital Signature in Cloud-Rooms

How can I activate the digital signature in the online check-in?
How can the guest digitally sign during the online check-in?
If you have not yet activated the online check-in, please activate it first.

You can find the related help article here:
https://w40.roomsoftware.com/en/help/How-does-online-check-in-work

Then go to:
settings/web-booking go to Signature

There you can choose whether the signature should be:

visible, or
required as a mandatory field

This allows the guest to provide a digital signature during the online check-in.