Patricia, here is another way. Click the provider's name at the top of the schedule, then click to the left of the appropriate time slot. The slot turns green and the "All providers" box at the top now says "Block". (If you want to block a longer time, after selecting one slot, hold the shift key and click the slot for the end of the interval and the whole time will be blocked.) Click "block" and you get a box that lets you type in the information you want. You can block 15 min, an hour, or a whole day this way.
I think this is what Donna is describing above, but as a new user I thought you might want more detail.
