In Capture One 23, a number of the built-in tool tabs are no longer selectable when you try to perform an Add Tool Tab command. These include the Black and White, Composition, and Local Adjustments tabs. Although you can add and assign icons to custom tool tabs, the icons associated with the built-in tool tabs are not available for selection when creating a custom tool tab. So, if you want to utilize the icons associated with those tool tabs, then you need to re-enable them. Fortunately, this is not difficult, and simply requires some manual editing of the workspace .plist file. Once they are visible (and in the desired order) it’s just a matter of customizing the tools on each tab to your liking.

The workspace .plist file is organized into various dictionaries, defined by the <dict> key. The one which controls the visibility of tool tabs is identified by <key>com.phaseone.captureone.sessionwindow.tools</key>. Near the end of that section is an array identified as <key>tabConfiguration</key>. Adding members to this array will control their visibility within the workspace. It also controls their order.

The following procedure are the steps I took:

1. Select the default workspace.
2. Add any desired missing tool tabs which are selectable.
3. Save the custom workspace.
4. Open the .plist file associated with the new custom workspace. The file is located in /[User]/Library/Application Support/Capture One/Workspaces.
5. Locate the appropriate key; add the appropriate strings. For the hidden built-in tabs, these are named BlackWhiteToolTab, CompositionToolTab, and LocalAdjustmentsToolTab, respectively. Optionally, organize the tabs as desired.
6. Save the file.
7. Refresh Capture One by selecting the default workspace, and then reselecting the custom workspace. The hidden tabs should be visible.