Admin account Transfer

The calpolysteelbridge.com website is controlled by the Cal Poly Steel Bridge team. This team changes its captains and members yearly. Over time the administrator to the site has left the team.

Problem: We can only post new topics for the site. We can no longer add/edit pages or manage anything else about the site.

Is there any way to transfer the new permissions to the current team captains so that we may better manage the site

We also just recently renewed the site and returning member lost their ability to edit/add pages and like tasks.

Thanks for any help in the matter.