9 – Grouping—Grouping layersTASCAM DM-24 Reference Manual 71ing the SEL key to turn the channel into a slave chan-nel brings up a warning message (Re-assign fadergrouping?), and pressing ENTER reassigns the group.Any of the cursor keys may be used as “no” or“escape” keys here.If a channel has already been assigned to a group as amaster, pressing the SEL key clears the whole group.A popup message appears (Clear this fader grouping?),and pressing ENTER clears the group. Any of thecursor keys may be used as “no” or “escape” keyshere.Fader groups to mute groupsAt the right of the display, about halfway down thescreen, there is an on-screen LINK button.When this button is off, it is labeled FADER>MUTE.Moving the cursor to this button and pressingENTER brings up a popup asking whether a linkshould be made: Grouping link(Fader -> Mute) (ENTERfor yes, cursor keys for no).This transfers the fader groupings to the mute group-ings (that is, the mute group settings become identi-cal to the fader group settings). This is a “live link”—when changes are made to the fader groups, they areechoed in the fader groups and the other way round.The button is now labeled FADER=MUTE and is shownin inverse, showing that the link is active.Pressing the LINK button in either the fader or themute group screens deactivates the link.Turning groups on and offWhen a fader group is highlighted on screen (the cur-sor box surrounds it), either use the fourth soft key orthe ENTER key to turn the group functionality on oroff. This does not clear the group settings.Grouping layersIt is often useful to make groups of groups in order tosimplify mixing. This applies to both fader groupsand to mute groups.For example, when using mute groups, you mightfind it useful to group the vocal microphones of asession into one mute group, the drum microphonesinto another, and other percussion microphones intoyet another.In order to cut out any microphone spillage, thesethree microphone groups could be layered into a“supergroup” which controls all the microphoneinputs.It is also possible to layer the layers,The right part of this detail showing a three-level lay-ering setup is a tree diagram, showing that group 6 isthe “supermaster” group. In other words, pressing themaster SEL key of this group controls the status ofgroups 7 and 8 (for mute groups) or moving the mas-ter fader of the group.These “submaster” groups in turn control groups 1and 2 (controlled by group 8) and 4 and 5 (controlledby group 7).To use these grouping layers:1 Use the § and ¶ cursor keys or dial to navi-gate the cursor to the master groups shownas horizontal rows in the matrix at the lowerpart of the screen.Empty groups (with no master or slave) areshown with an x by the group number)2 Use the SEL keys of modules 1 through 8 asgroup selectors to assign slave groups.NOTENote that here the SEL keys do not refer to channels—they refer to the groups that have been set up in thetop part of the screen. They can be used in this way inthe two channel layers (1-16 and 17-32) but not in theMASTER layer.Pressing the SEL key corresponding to any groupexcept the highlighted master group adds (checkmark) or removes (dot) the group to or from the layercontrolled by the master group. The master group has