Speakers
this regard, to ensure and certainly should confirm the speaker at least 2 to 3 weeks, more careful then 1 day before you can confirm the speaker back again. The speakers themselves will have one person supporting (speaker side) replaced when they have problems can not attend. But for sure you should have available a contingency speaker (can be a person in the company is capable of speaking and deliver content to viewers), and you will give all the content will be presentations in throughout the seminar was held.
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