Support case tickets viewable by all admins in one company

Tickets raised via the Support case management tool can only be seen by the person who raised them, rather than all admins for the same company. When colleagues are off we cannot participate in the resolution of issues as they are hidden from the rest of us. Can we have a tab where all tickets can be seen as well as ones we have personally raised? Also why can we only have 3 nominated admins who can raise tickets, there are 10 of us in the team?!