[otrs] How do I set the priority of a ticket (OTRS6)

Feeling stupid, but how do I set the priority of a ticket (OTRS6) in the webinterface? I do see a "grey rectangle" indicating priority 3 ("normal") but I can't seem to alter that. Ralf Hildebrandt Charité - Universitätsmedizin Berlin Geschäftsbereich IT | Abteilung Netzwerk Campus Benjamin Franklin (CBF) Haus I | 1. OG | Raum 105 Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 ralf.hildebrandt@charite.de https://www.charite.de