On large projects, the Project Tree can become overloaded with dozens of Data Products / Logical Units (LUs), most of which you are not actively working on. Logical Unit Groups let you hide the LUs you don't currently need, while keeping all of the organization's assets in the same source-controlled project. Hidden LUs:
Hidden LUs are not simply hidden individually - each one is placed into a group. Groups let you act on many hidden LUs at once (hide/unhide, rename, remove) instead of managing them one by one.
Note: Web Service and Reference LUs cannot be hidden - the Hide Selected Logical Units command is not available for them.
To hide one or more LUs:
Ctrl/Cmd + click to select several LUs at once.

If one or more groups already exist, you are instead asked to Choose a Group - either create a new group or add the selection to an existing one (existing groups show how many LUs they already contain):

Enter on an empty box:
Once hidden, the selected LU(s) disappear from the Project Tree and appear instead under the LOGICAL UNITS GROUPS section, at the bottom of the Explorer side bar.

Expand the LOGICAL UNITS GROUPS section to see all groups and the LUs hidden inside each of them.
Right-click a group to:

Right-click a specific LU inside a group to:

Two related settings are available under Fabric > LU Groups in the Settings editor:

.theia/luGroups.json, which can be committed to Git so the whole team shares the same hidden LU groups. When disabled (the default), which LUs are hidden is kept locally, per user.On large projects, the Project Tree can become overloaded with dozens of Data Products / Logical Units (LUs), most of which you are not actively working on. Logical Unit Groups let you hide the LUs you don't currently need, while keeping all of the organization's assets in the same source-controlled project. Hidden LUs:
Hidden LUs are not simply hidden individually - each one is placed into a group. Groups let you act on many hidden LUs at once (hide/unhide, rename, remove) instead of managing them one by one.
Note: Web Service and Reference LUs cannot be hidden - the Hide Selected Logical Units command is not available for them.
To hide one or more LUs:
Ctrl/Cmd + click to select several LUs at once.

If one or more groups already exist, you are instead asked to Choose a Group - either create a new group or add the selection to an existing one (existing groups show how many LUs they already contain):

Enter on an empty box:
Once hidden, the selected LU(s) disappear from the Project Tree and appear instead under the LOGICAL UNITS GROUPS section, at the bottom of the Explorer side bar.

Expand the LOGICAL UNITS GROUPS section to see all groups and the LUs hidden inside each of them.
Right-click a group to:

Right-click a specific LU inside a group to:

Two related settings are available under Fabric > LU Groups in the Settings editor:

.theia/luGroups.json, which can be committed to Git so the whole team shares the same hidden LU groups. When disabled (the default), which LUs are hidden is kept locally, per user.