Dear Sebastian, dear all, I am very new to Open Meetings but I am pretty impressed so far. I have a MacBookPro 17 inch and run OS X 10.6.8 I have however three questions: (1) Which tablet do you recommend me, so that I may write mathematical equations by hand in the whiteboard? A tablet is ideally an iPad, but could be also any A4 surface on which I can write (and erase) with a stylo. (2) Can I (=moderator) show other webinar users only the whiteboard (not the whole screen) but do not let them write on the whiteboard when they want, only when I want? (3) May I erase only some (but not all) lines in the whiteboard? Thank you Adrian-F