Generally, it is necessary to combine your activities, such as exhibitions and launching ceremonies, and set up special seats for signature of leading guests. When you get to your seat, it is natural to ask the leader to sign an inscription, and the leader will generally agree with you. If it is an important signature activity, it is necessary to inform the leading secretary in advance, so that the leaders can be prepared, and then prepare the corresponding reception and arrangement after the leaders agree.

Special reminder: you should know in advance whether the leader has this preference, or whether you can sign it (especially with a brush), so as not to catch the leader off guard and blame him.

I hope I can help you.