Get to know the policies. They probably outline a process for approval and implementation. Ask other staff members for internal educational, or publications policies. Familiarize yourself with these policies. Look at the policies for logos or symbols.
Many museums use the same logo on all publications.
It helps visitors to identify your organization and remember what you are about. Plan to use these symbols in the design of your website. Is this person available to you. Ask for examples of other projects they have worked on to get an idea of their style. Find out service pricing information and the availability of this person for their project.