Meeting assistance system

A meeting assistance system, which comprises a computer comprising a processor and a program, wherein when executed on the processor, the program makes the computer to execute the program, comprising:

• a presentation document storage unit (3) that stores a presentation document;
• an authority imparting unit (5) that grants a document operation right to a participant;
• a document sharing unit (7) for sharing the presentation document with a participant;
• and
• a presentation document updating unit (9) that operates and updates the presentation document stored in the presentation document storage unit (3) based on an operation from a plurality of right-holding participants to which a document operation right has been granted by the authority imparting unit (5), wherein
• the document sharing unit has instructions to cause in a case where the document sharing unit (7) is sharing a certain presentation document stored in the presentation document storage unit (3) with a plurality of participants, wherein when the plurality of right-holding participants operate the certain presentation document, the updated certain presentation document is shared in real time with the plurality of participants,
• for a certain image content as a content included in the certain presentation document, in a case where the meeting assistance system concurrently receives commands to move the certain image content from two or more right-holding participants the presentation document updating unit (9) changes color of the certain image content, and updates the certain presentation document,
• wherein the certain image content with changed color is shared in real time with the right-holding participants,
• the document sharing unit has instructions to cause in a case where the meeting assistance system concurrently receives the commands to move the certain image content from the two or more right-holding participants, corresponding and respective assumed images of the certain image contents reflecting the concurrently received commands are simultaneously shared and displayed to the plurality of participants,
• and the presentation document storage unit (3) exists on a web server.