English to Spanish Bus/Financial Business/Commerce (general) conference planning

From a Physical and Procedural Security Guide under the heading Meeting Rooms.
I'm not sure what refresh means here.
Thank you for your help, fellow proz.

...Provisions should include measures for safeguarding access to the meeting room(s) while the meeting is in progress, during breaks and when the room is unoccupied. Infrequently, laptops are left unattended in meeting rooms after hours and are the target of theft; laptop computers should be removed from the meeting rooms and secured in the attendee’s room following each day’s business. ***Staffs who REFRESH the meeting room should be supervised throughout the conference.*** Any proprietary Eaton information should be secured at the close of each business day…collected and, if necessary, secured in a suitable locked container or shredded. Company information, regardless of format, should not be left unattended in the meeting rooms...