set XMPP priority of the jabber client in pidgin

I'm using *pidgin* Jabber client ([pidgin-2.13.0-alt6](https://packages.altlinux.org/en/sisyphus/srpms/pidgin) on ALT Sisyphus), and I'd like [to set XMPP priority](https://superuser.com/a/1137749/65570) in pidgin. The reason: I'm also connecting to my Jabber account with another client from mobile smartphone (*aTalk*), and I'd like to set XMPP priority in pidgin, so that whenever I'm at my computer (where pidgin is running), it is [selected as the one which receives the messages](https://unix.stackexchange.com/q/163698/4319) people send to me, and whenever I'm away, the mobile client receives them (because there is more chance I'll see them on the mobile when I'm away). Where do I set XMPP priority in pidgin?