To store a frequency press 'Any key' then E/yes. It stores it into a (created) system called "Qck Save Cnv Sys" accessible through Menu, Program System, Qck Save Cnv Sys, Edit Group, Qck Save Grp, Edit Channel. This new system and group have the same options as any conventional system/group and can be edited the same way.
Close Call is rather complicated. You may want to review the Easier-to-Read Manual below.
Easier to Read BCD396XT Digital Scanner Manual