For the online part of the conference we plan to use the platform of Google Meet. To use it, standard web browsers on notebooks or native applications on tablets and smartphones are sufficient. The users must have a Google account, e.g. using Gmail, that is already the case for many participants. It can be easily created for free if some participants do not own such an account. The remote participants will be recognized by the email address provided by Google account. The email address shall be sent by each participant to the organizers of the conference if not yet done.

The participants will receive an invitation by email with a link for each session (a series of lectures without break) on the provided email address in advance. The link is used to open the page with the stream. For those participants that use Google calendar, the schedule with the links will appear in their calendar. The links will be announced also on a web page. Note that participation on the online lectures will be allowed only for registered participants.

The remotely presented lecturers can use the presentation tools of their choice on their computers, e.g. PDF slides or Powerpoint, to give a talk. When they open the page of Google Meet by the provided link, to start the talk at the reserved time they will be allowed to share the screen of their computer. We recommend using a web camera on the computer during the lecture to give a more lively online talk.

The remote talks will be broadcasted to the personally presented attendees of the conference in a seminar room. The remotely presented attendees of online lectures simply open the page with the provided link on their computer or tablet. The organizer ("chairman") of the session can mute the microphones of remote attendees to avoid feedback or background noise. The remote attendees can use the text chat in Google Meet if necessary or they can unmute the microphone at the end of lecture during discussion. We recommend to switch off the cameras of remote attendees for most of the time to save bandwidth for the stream.

The personally presented lecturers can use the notebook from organizers where they can upload their presentation before their talk in the seminar room for personally presented attendees. Standard presentation tools, e.g. PowerPoint, Acrobat Reader, video players, etc., will be available. The screen of the notebook will be streamed for the remotely presented attendees together with the video of the lecture taken by an external camera.